AO Smith Water Heater Troubleshooting

If your faucet is taking too long to heat up to the needed temperature or if your hot water runs out by the time you get to the shower, it may be time to invest in a new water heater. You may want to look at best AO Smith water heater reviews. They have some of the most technologically advanced water heaters.

Many water heaters corrode or rust over time which can lead to leaks and water damage. It is, therefore, important to be armed with knowledge on AO Smith water heater troubleshooting.

AO Smith Water Heaters


Best AO Smith water heaters

Let us take a look at some of the best AO Smith water heaters so that you are able to select the best that suits your needs and preferences.


The AO Smith Vertex GPHE-50

The AO Smith Vertex GPHE-50


The AO Smith Vertex GPHE-50 is a 50-gallon water heater. It has a height of 68 inches and measures 17 inches in diameter. It takes minimal floor space and can fit nicely into a corner space while still leaving room for other storage.

At the bottom of the tank, it has a pilot light on the gas fueled burner. Heat rises through a spiral heat exchanger in the water, letting it retain heated combusted gases in the tank for a longer period of time. The exchanger operates at 96% thermal efficiency, which is more efficient compared to standard models which mostly operate at 80%. The Intelli-Vent Gas control allows you to regulate the system and track the water temperature.

This gas heater is able to produce a constant flow of water at 3 gallons per minute. It is environmental friendly and reduces carbon emissions by 33%. The gas heater comes with a bras drain valve which is more resilient and tamper resistant compared to plastic; T&P relief valve to release steam or water if the pressure or temperature gets to risky levels.


AO Smith GPVT-50 Residential Natural Gas Water Heater

AO Smith GPVT-50 Residential Natural Gas


AO Smith GPVT-50 has an exclusive three position blower outlet that is rotatable which makes it flexible and easy to install.

It also has CoreGard aluminum anode rod with a stainless steel core that protects the tank from corrosion for a longer period of time compared to mild Steel anodes. The brass drain valve is also durable and tamper resistant which improves its reliability and safety.

One of the most significant factors that make this one of the best AO Smith water heaters is the Dynaclean II dip tube that controls pressure from the inlet water and thus minimizes cold water areas inside the tank. It also has a self cleaning action which helps reduce sediment accumulation at the bottom of the tank.


A.O. Smith ENT-50 ProMax High Efficiency Tall Electric Water Heater, 50 gal

ProMax Plus High Efficiency Electric


This one offers unmatched quality and value. The steel tank is protected from corrosion by permaglass coating thus maximizing its tank life. The dynaclean diffuser dip tube on the other hand reduces sediment and lime builds up while at the same time maximizing on the output of hot water which is good for heat sauna treatment.

It also has CoreGard aluminum anode rod with a stainless steel core that protects the tank from corrosion for a longer period of time compared to mild Steel anodes. The brass drain valve is also durable and tamper resistant which improves its reliability and safety. It also meets all regulations set by the National Appliance Energy Conservation Act (NAECA)

AO Smith water heater troubleshooting

Just like any other water heater, best AO Smith water heaters have their shortcomings.

  • Installation: You will definitely need a certified installer to put up your water heating system. This comes at an extra cost, so be prepared.
  • High Cost: Generally, best AO Smith water heaters are expensive. This coupled with several additional costs such as installation makes them very expensive. However, the quality compensates the expenses.
  • High Amperage Circuit: Depending on the type of best AO Smith water heater you select, the amperage required will differ. The benefits however outweigh the barriers. It reduces the amount of water wasted, shortens the time of heating water and improves the efficiency of the main water heater.
  • Lag Time: There is a lag time of about 8 seconds to have the burners light up and heat the water to your preferred temperature. This however saves a lot of water and ensures hot water does not run out and also conserves about 50% of the energy you use.
  • Regular Cleaning: You may be required to clean the air filters regularly to ensure that they are in good working conditions. This may cost you some extra money which makes best AO Smith water heaters much more costly compared to other water heaters. The operating costs, however, are low especially when installing during warm climates.

Keep In Mind

Best AO Smith water heaters are reliable, they are easy to install with the help of a professional installer and will last you for a long time with proper maintenance. There are no fans or pumps to burn out which makes them easy to maintain. Now that you know a thing or two about AO Smith water heater troubleshooting I am sure you will have an easy time using the units and taking good care of them.

How to Solve Rinnai Tankless Water Heater Problems

Some hot water, please! If you are looking for a regular supply of hot water at any particular moment in time, Rinnai heating products will do just that for you. It can, however, be frustrating to have Rinnai tankless water heater problems just when you need some supply of some nice hot water for a shower or hot bath.

Rinnai heating products can be used for both commercial and residential heating needs. If you are having any Rinnai tankless water heater problems, you can rest easy because this tankless water heater comes with a five-year warranty on replacement parts plus a limited warranty of twelve years for the heat exchanger used for residential purposes.

Rinnai Tankless Water Heaters reviews


Importance of Rinnai heating products

  • Rinnai heating products ensure that you have a steady supply of water at all times. The tankless water heater does not require a pilot light; the ignition is automatic and electronic. This also means that the noise levels are very low.
  • If you are looking for water heater system that takes a minimal amount of space, Rinnai is your answer. Rinnai heating products (waterless tank) only requires little floor and wall space and can be set up either outside or inside. You also get to save on the amount of energy you use in your home.
  • Each indoor model of Rinnai tankless heating system has an inbuilt digital temperature controller while every outdoor model comes with a controller. Compared to traditional tanks, Rinnai heating products use 40% less energy while at the same time giving you maximum efficiency.
  • This system ensures that it is only operational when you need hot water, there are no storage tanks to reheat due to the tankless technology thus you save a lot on your utility bills. Rinnai heating products come in different sizes depending on your needs. Less water is wasted in landfills plus this is an eco-friendly system.

Tips on Rinnai tankless water heater problems



When it comes to installation you made need a professional to do it. This is one of the Rinnai tankless water heater problems. It is important to get a certified installer which means an extra cost. However, you would not want to damage your water heating system even before you start using it. In the long run, it will save you a lot of costs.


Time to get hot water

In some instances, according to steam shower generator reviews it takes some time to have some hot water running. This, however, depends on how far your point of use is. For most people, there is no wait time in getting hot water. It is recommended that you have the tankless water heating system closer to where you are using it.


LC code

It is easy to often see the LC code due to hard water and calcium issues. It is advisable to flush the unit regularly or have a water treatment system in place.



Rinnai heating products are expensive. However, they will save you much more than you will spend to purchase.

How to use Rinnai tankless water heater

  • Switch on the dishwasher, shower or washing machine. Cold water will enter from the inlet pipe at the bottom signaling the PC board to activate ignition.
  • The combustion fan will turn, allowing oxygen into the burner for ignition as the gas the gas valve opens up slowly. The igniter will stop sparking when there is an adequate flame. This begins the net series of operation which happens in seconds.
  • As the water passes through the copper heat exchanger coils it is heated. It goes out through the outlet pipe (hot water) to where hot water is needed. If you are using a condensing model, the water is preheated as it goes through the latent heat exchanger, capturing any additional heat before it gets into the vent system
  • The blower and gas valve automatically adjust oxygen and incoming gas to attain the water heating demands. When the demand is great, the flame expands over the width of the burner thus heating more water. When the demand is less, the water heater uses less gas and a smaller flame. The digital controller lets you choose your preferred temperature and the tankless water heater will always adjust to ensure the set temperature is maintained.
  • When the hot water fixture shuts, cold water no longer gets into the tankless water heater, thus the flame reduces. The combustion fan continues to run at a low speed for a short span of time allowing the exhaust of any combustion gasses that might have been left in the system.

Important to Remember

Rinnai tankless water


  • To ensure that your Rinnai tankless water heater runs smoothly flush the unit regularly to keep it free of lime and scale. The in-line screen filter located on the inlet fixture should also be checked periodically for filters.
  • Remember to switch off the incoming water as you do the check. It is also important to always ensure that there are water, gas, and electricity to the Rinnai water heater.
  • Remember to always get a certified installer to attend to any Rinnai tankless water heater problems.

How to Resolve Bosch Tankless Water Heater Problems

An effective, simple solution to your hot water needs is Bosch water heater. We all know how annoying it can be to run out of hot water in the middle of a shower! It is very important to have a reliable water heating system that won’t bail on you when you need it most.

The only thing that could make you have a cold shower with Bosch water heater is probably Bosch tankless water heater problems. But this can be easily fixed in less time. Bosch water heater is an easy-to-use device that allows you to maintain constant water temperature even when it flows at varying rates. You can save up to 50% on your utility bills by using an energy sufficient water heating system while at the same time conserving the environment.

bosch tankless


You can save on space and energy by using the most advanced Bosch water heater. They are lightweight, easy to handle and can be wall mounted. Depending on your budget you can either get Bosch water heater supply hot water to one major usage at a time or Bosch hot water for two major uses. The operating costs are low and thus ideal if you are on a tight budget.

What makes Bosch water heater useful?

Bosch water heaters come in different sizes. They are ideal for residential or commercial use. Every size of home can get warmth from Bosch gas heating systems and hot water that can be used for any kind of requirement. Multi-family buildings with a living space of up to 10,000 m as well as single floor apartments can comfortably use Bosch systems.

A Bosch tankless water heater uses the principle of economic flow heating. This means that once you open the tap, cold water gets heated as it passes through the machine. The boiler is only functional when hot water is needed.

  • Bosch water heaters have strong and capable units. The units do not require any electrical connection or batteries to operate. As they have hydro powered ignition systems. They also have an enhanced scale resistance.
  • A built-in flow sensor ensures that there is constant output temperature to distribute regular hot water. This is coupled with a 97 percent efficiency minimal standby loss.

Tips on Bosch tankless water heater problems and troubleshooting

Some of the most common but easy to solve Bosch tankless water heater problems include installation, leakage among others. Let us take a closer look at some of the challenges experienced by most users and how best to resolve them.


When it comes to the installation of sensitive products, it is always important to get a professional to do it for you. However, Bosch water heaters are easy to install and if you decide to do it yourself you can easily do that. It is, however, okay if you decide to get a professional to do the job and ensure that everything is running as required.

While doing it yourself (the installation) use 3/4 inch standard threaded lines for the inlet and outlet overflow. It is easy to install this by yourself and have the unit up and running in no time. The unit comes with connectors that are easy to install and the heater takes up the minimal time to heat up the water. You can also adjust the temperature of the outgoing water to suit your needs.


Generally, the life expectancy of Bosch water heaters is twenty years, with proper care. The water heating systems come with a fifteen-year limited warranty. This can give you peace of mind that the product you are purchasing is of high quality. Although one or two clients complained of leakage, it is evident that this is not a recurring problem. So lower your antennas.

Unsealed Fittings

The fittings entering the heater are made of brass; however, they are not sealed. This, however, should not be a major concern; the manufacturer has ensured that all safety measures are adhered to and that the consumer is at no risk whatsoever.

Cold Water Sandwich

Bosch water heater eliminates the cold water sandwich problem that is so common with almost every other water heater. The system supplies an unlimited supply of hot water, facilitated by its modulating burner technology. This technology allows you to accurately control the temperature of the heater.

Gas Supply Pipe

A customer bought a new Bosch unit and was not happy that it required a gas supply with a larger diameter. Of course, this can be a bit irritating because it means you have to use extra coins; however, you can quickly resolve this and have your water heating system up and running.

Tankless water heater is the solution

Bosch water heater can last you for more than twenty years with proper care. It will save you money on a daily basis and thus it is definitely a worthwhile long term investment. Whether you need a water heating system for commercial or residential uses, Bosch has a variety of products to suit your need. You can find useful information by reading Bosch tankless water heater reviews.

Always remember to know your needs in order to get the right unit and avoid Bosch tankless water heater problems with easy maintenance tips and timely servicing.

Noritz Tankless Water Heater Problems

Noritz Inc was established in 2006 and has since then made a name for itself as one of North America’s leaders in terms of home comfort. They provide a wide variety of high quality tankless gas water heaters, widely renowned for being outstandingly durable and efficient heating solutions.

Despite their products being made to such high standards, no human invention can go without its flaws, and your water heater can easily run into variable issues like failure to heat the water up. This article was meant to highlight some of the most common Noritz tankless water heater problems people face. It should also help you fix whatever issues may run into.

miami Noritz Tankless Water Heater


Common Noritz tankless water heater problems

Here are some of the most prevalent Noritz tankless water heater problems faced by consumers.

The hot water tap is open, but no water is coming out.

Perhaps the most common problem, this arises as a result of the water outlet being clogged by debris, ice, etc. If this is the problem you’re facing, do the following:

  • Ensure that the water inlet filter is not clearing (not clogged) or otherwise clean.
  • Check of the water heater is frozen.
  • Check your front panel for an error code being displayed. If so, refer to your manual and countercheck what problem the code points at. If there is no error code, the simple fix could turn out to be to open all the shut-off valves on the hot and cold pipes..

The water from the hot water faucet is cold

If this problem affects you, try and resolve it by doing one of the following:

  • Ensure that the water inlet filter is clean.
  • Countercheck the hot water faucet to see if it’s open wide enough.
  • If there is an error code on the front panel, follow the instructions in the user manual to find out how you can fix it.
  • Depending on your model, check for the presence of an external recirculation system. If there is a check valve on the recirculation return line, try one of the following solutions:
  • Check your cold water inlet filter for dirt or debris that may be clogging it. Either clean it on your own, or if you don’t know how, refer to the manual for instructions on the proper way of cleaning it.
  • Last option - maybe it passed the top of your head but, try opening the hot water faucet all the way.

It takes too long for hot water to reach the fixtures

  • Once again, this depends on your Noritz tankless water heater model. If you have one that has an external recirculation mode, the most viable method of fixing your problem is to have a contractor install you a recirculation return line. This is usually done at the faucet furthest from the water heater.

The Water from the hot water faucet is not hot enough

  • Believe it or not, 9/10 times this happens, it’s because of not setting the temperature on the thermostat high enough. Check the thermostat to see if the temperature is set too low.
  • Alternatively, check for cross plumbing between the cold water pipes and the hot water lines.

The water is too hot

  • Once again, this is an error often made out of ignorance. Check your thermostat to see if the temperature has been set too high.

Other minor problems with Noritz tankless water heaters

Most other problems are accompanied by an error code on the water heater and can be solved by following the instructions on in the manual. The last resort to follow if all else fails would be to reset your Noritz tankless water heater system. This can be done by pressing the Reset button located on the front panel.

However, if none of the solutions on this list help you out and you’re completely unable to fix the heater, your best bet would be to call an authorized technician for assistance.

Common Error Codes



This error signals an exhaust overheat, leading the exhaust high limit switch to shut down the unit when the flue temperature reaches or exceeds 149 F.

  • Turn off the heater for around 30 minutes then restart it.
  • Check for a clog in the automatic flow adjustment valve.
  • Clean for any blockages in the inlet water strainer.
  • Remove and clean the heat exchanger with a cleaning solution.


This error is as a result of overheating of the heat exchanger.

  • Turn off the heater for around 30 minutes then restart it.
  • Check the inlet water strainer and clean it if necessary.
  • Check the automatic flow adjustment valve.
  • Remove and clean the heat exchanger with a cleaning solution.

Additional Notes

The most important thing to remember when trying to figure out Noritz tankless water heater problems is that regular maintenance helps prevent most of these problems in the first place. Make sure you clean your heater regularly and drain it before performing these maintenance tasks for the most efficient heating solutions.

Navien Tankless Water Heater Troubleshooting

Navien is a well-known brand name that is popularly known by the home-comfort related manufactured by it. Since its inception in 2006, the company is blooming high with its unparalleled quality. The products manufactured here specialize in providing incredibly high 98% efficiency.

With more than three decades of continuous success, Navien doesn’t compromise on its quality and sophistication in design. It uses an advanced boiler and uses water heating technology. Acknowledged as one of its best-selling products, a Navien Tankless water heater possesses the state-of-the-art technology.

Navien Tankless Water Heater1


With no compromise on its quality, it aims to gain a lot of attention. In this article, we will discuss this particular product, its uses and ways to troubleshoot the hitch.

How Navien tankless water heater works

Navien tankless water heater provides an endless supply of hot water on demand, unlike the conventional storage tank water heaters that will eventually run out of hot water.The units get activated as you open the hot water tap. Each time you turn on the faucet, shower, or other water outlets, Navien's tankless water heater will immediately detect the flow and begins to deliver the desired hot water.

Common issues in Navien tankless water heaters

Although the Navien tankless water heaters are built to such standards, this doesn’t mean you won’t run out of hot water. In its initial phase, Navien tankless water heaters had some serious issues.

Due to this, they were known for their unreliability, short bursts of cold water and other minor failings. Causing the sales of the products to be completely stopped around 2009. But luckily, they have gotten much better, and their problems were all addressed over time.

However, this doesn't mean you wouldn't come across problems while using any one of them. Some of the common errors of Navien tankless water heaters are below. We have also included the troubleshooting guide along with this:


Issues with the flow sensor

One of the common issues with the flow sensors is that they can easily corrode. The sudden breakdown of flow sensor results in shutting down of the unit as the buildup would impair operation.

  • There is a temporary fix where you will take the two clamps off the sensor, pull it out and blow on it. The fix recommended by Navien tankless water heater is to change the sensor over to stainless steel. Alternatively, you can replace any part to prevent this unexpected shutdown. Also, an additional fix is to install a 5-micron filter in the water inlet right before the Navien.

Issues with the control boards or motherboards

It is often noticed that motherboards or control boards fail relatively on a frequent basis. This type of situation occurs only when the unit fluctuates. You notice some types of abrupt on and off. Seeing this happen on a repeated basis or possibly, it ends with a failure of error code 03 (ignition failure).

  • The only real solution is to power cycle the unit (unplug and plug back in) or replaces the Navien control board.

Cracking Heat Exchanger

This might not happen on a frequent basis as compared to the other problems. On the other hand, the heat exchanger of the tankless water heater starts withering on an occasional basis. With time passing, because of frequent usage of the tank the state of heat exchanger deteriorates.

  • A heat exchanger should be replaced immediately; it’s a breached containment allowing exhaust gasses to enter your home. The heat exchanger is under Navien warranty.

It takes too long for hot water to reach the fixtures

On some occasions, you might come across some a situation, where the Navien’ tankless water heater starts getting slow. It is suggested to go deep in this situation and look for the blockage.

  • If you are using the external recirculation mode, have a contractor come in to install a recirculation return line from the faucet that is the furthest back from the water heater.

Water not getting hot enough

This can be one of the major problems faced by the user. The tankless water heater is known for providing hot water at a certain temperature.

  • To sort this issue, try to check if the temperature is set too low. Another thing you can do is check for cross plumbing between the cold and hot water lines.

For other little problems that are not mentioned above, you should try to reset the water heater. This can be one of the easy and workable solutions for all miscellaneous Navien tankless water heater problems.

Here, you can reset your water heater by pressing the Reset button located on the front panel. Being an all-time solution, you are better off with the tankless water heater. However, if resetting the Navien water heater and trying the other solutions listed here doesn’t work, then it’s best to call in an authorized technician for further assistance.

Should I Turn Off Water Heater if Water is Off?

Should I turn off water Heater if water is off? This is perhaps one of the most commonly asked questions on the internet, and, as is often the case with questions asked on the internet, it’s at the same time, one of the most ill-advised.

Should I turn off water heater if water is off? Honestly, the true answer is it depends on some scenarios. There are a wide variety of scenarios where either answer would suffice, but there isn’t one simple answer to this. First of all, considering the fact that the water heater itself, especially high quality tankless water heater, was designed to be as accident-free as possible.

When You Should Turn the Heater Off

  • The first scenario is the most obvious one, and it’s not merely advice to help you keep safe. This comes about when, for instance, your water tank is empty and you’re leaving for an extended period of time. Most water heaters usually divided into two, separating the cold and hot water.
  • They also have a dip tube on the cold water side that keeps the cold water at the bottom of the tank. If anything happens and pressure is lost on the cold water side, the tank siphons down through the cold water inlet until it reaches the bottom of the dip tube. Then, considering there's no more water in the tank to absorb this heat, the dip tube may melt and the tank will end up getting be damaged.
  • However, this is a very unlikely scenario, since it depends on the absence of water from your tank, which, in itself is completely unlikely. You’d have to intentionally cut off the supply from the water tank, or otherwise, be experiencing serious water shortages for this to over come into play. Should I turn off water heater if water is off? In the scenario your water tank is empty or significantly lacking water, the answer simple answer is yes.

When it really doesn’t matter to turn it off

  • If my water tank significantly is full, should I turn off water heater if water is off? Most people ask, If my water heater is left on, and the water supply is shut off, will any damage occur to the gas fired water heater, if very little of the hot water won’t be used much, or not at all?
  • Well, if you won’t be using the water for some time, and the water will only be off for a short time there is little to no risk involved. You can also shut off the cold feed valve just to ensure no water is siphoned out of the tank if cold water is also used with the tank off.

This would, however, not allow much of the hot water to be used out of the tank as this will have now air locked the system. You need to note, however, that the water heater will still turn on and off to maintain the water temperature inside of the tank, anyway.

Think about what would happen if you ever go away for a prolonged period of time. In most circumstances, there will be no water use for days, maybe even weeks and this doesn’t cause any problems with the tank. Even if someone does use water from the tank most (if not all) modern water heaters have low water cutoffs normally built into the unitroll (or aquastat).

Now, your tank has a dip tube for the inlet. This dip tube, according to standard specifications, stops 4 to 8 inches above the unitroll (this basically regulates temperature water inside the tank). It ensures that for whatever reason if the cold supply happens to lose pressure, the water isn’t siphoned out of the tank completely.

This design is meant to avoid the tank from being "tricked" to continuously running in order to try and maintain temperature if all of the hot water in the tank is used up. This also helps avoid the possibility of a melting dip tube or a catastrophic failure of the tank.

  • Should I turn off water heater if water is off? Don’t worry. The fabulous design already did your job for you. You don’t have anything to worry about.

Should I Turn Off Water Heater if Water is Off? The final answer

  • To be honest, and completely realistic, there is no danger involved in having the tank on with the water off, especially since the tank works through water pressure in order to supply the hot water and the tank pressure will be equal to your water pressure the whole time - if there’s no inlet water pressure, there will be no resultant outlet water pressure.
  • Besides, if shutting off your water and leaving your water heater on even happens to cause damage or catastrophic failure, then the water heater manufacturers would be up to their necks in lawsuits every day. That’s the whole point of engineering, really. Even if it did cause any issues, all the parts of the machine, including the labor provision and costs, would be covered by the manufacturer.
  • So, should I turn off water heater if water is off? At this point, it’s hard to say anymore. Depending on your situation, you should or you shouldn’t.

Best Natural Moisturizer for Dry Skin Due to Heaters

It’s a well-known fact that a heater can cause dry skin. With all the technological advancement that we’ve lived through in the last few decades, we’ve become very much used to hot showers. Because of that, we somehow forgot the detrimental effect that hot water has on our skin. Due to extensive exposure, we find ourselves with skin devoid of water. And then you come to ask yourselves – what is the best natural moisturizer for dry skin due to heaters?

The emphasis, of course, is the “natural” part. There is a simple reason why that should be the case. You see many cutting-edge creams and products advertised as the best humidifier for dry skin. They all use the extract from natural sources. So, why expose yourself to some additives and pay more money? You can get the best natural moisturizer for dry skin due to heaters right from Mother Nature!

Olive Oil – The best natural moisturizer for dry skin due to heater

Having dry skin because of a heater is not an unsolvable problem. It can be prevented and stopped. but using the right knowledge and measures to counter it. It may seem like something unimportant at first, but don’t take this issue as a joke. It can give birth to very serious health complications.

Benefits Of Olive Oil


  • If you take a look at most tankless water heater reviews, you will notice a trend of people complaining that they have had dry skin from the usage of that specific product. This is not a knock on the heater, but more on people’s rational thinking. Our skin was not meant to withstand the heat that water heater produce. We should take the first step – tone down on the temperature and use colder water to wash.
  • If you’ve taken that precaution, you can now freely think about getting yourself a cure. Dry skin because of a heater requires lots of antioxidants and healthy fatty acids. These dive deep into the layers of skin and provide the necessary hydration and the nutrients which are necessary for healthy skin. Taking that into consideration, the best natural moisturizer for dry skin due to heaters is, without a doubt – olive oil!
  • It beat yogurt and other natural remedies because its overwhelming amount of healthy fatty acids, which is pretty crucial for repairing damaged tissues. It’s also the best humidifier for dry skin. The antioxidants have also been proven to contain a small helping hand in getting rid of unwanted fat tissue.

Many types of research by leading scientific institutions around the world have proven that olive oil also helps you keep that youthful look for years to come. A skin without acne or imperfections is not a sign of great care – flexible and soft skin shows precisely that.

There’s even more good news. Did you know that olive oil is a crucial component of many anti-burn remedies? It has shown staggering results on hiding scar tissue and causing marks and wounds to drastically heal and take a turn for the better. The best natural moisturizer for dry skin due to heaters isn’t located at your local pharmacy – but in just about every Mediterranean garden!

How to apply olive oil for a healthier skin

Although it can be applied in combination with other remedies, olive oil works perfectly fine on its own and the results are equally impressive. The way of applying it is by taking an hour or so before a relaxing bath.

  • Covering the surface where you’re going to lay down is crucial because you don’t want oil marks all over your bed sheets. All you need to do is mixing 5 teaspoons of olive oil in 100 ml of water and carefully spread the mixture all over your body.
  • You can apply it anywhere, but the advised areas to look out for are the joints! The skin on the knees and elbows stretches the most. It is the biggest testament to why a heater can cause dry skin. Make sure not to rub it in too mildly as your skin won’t be inclined to absorb the valuable nutrients.
  • When you’re done rubbing the olive oil mixture all over the critical and damaged parts, lay down for an hour, read a book and relax. After an hour has passed, treat yourself to a relaxing bath. The results will be instant and you’ll easily see why olive oil is the best natural moisturizer for dry skin due to heaters.
Olive Oil For Skin


There you have it! Best humidifier for dry skin

It’s simple, right? In order to have healthy skin, it’s not just enough to cure it whenever problems arise, but also take care of it so that problems don’t arise at all. Taking showers with mild waters will do wonders for your skin by itself and you also have the best natural moisturizer for dry skin due to heaters there to help you!

How Long Does It Take For a Water Heater to Heat Up?

There’s nothing quite like a hot shower on a cold day or a nice warm bath after an intense workout session. It’s perhaps one of the most relaxing experiences in the world, not to mention all the pharmaceutical benefits a warm bath or shower offers.

All the same, there’s also nothing as annoying as waiting around, unsure of the duration of the wait before that glorious water is finally ready. Worry not, because here’s a quick rundown that will help you answer that incredibly important question - how long does it take for a water heater to heat up?

This depends majorly on the kind of heater you’re using to heat up the water (other factors like atmospheric pressure and room temperature have intentionally been omitted as they aren’t in any one person’s control) since different heat sources certainly outperform others. This quick guide should help you figure out just that.

Another reason you should probably know how long does it take for a water heater to heat up is to alleviate the possibility of Legionnaires' disease (just think of it as the opposite of typical pneumonia - it’s caused by excessive heat, rather than excessive cold).

In this guide, however, you should keep the following in mind:

  • A thermal unit is a measurement of the amount of energy required to raise the temperature of a pound of water by one degree Fahrenheit.
  • The temperature at which water is considered safe is 122 degrees Fahrenheit.
  • 1 gallon of water is equal to approximately 8.3 pounds.

The Gas Water Heater

How long does it take for a water heater to heat up in the event that particular heater is a gas water heater?

An average amount of water held by a gas water heater is about 40 gallons of water, which allows entering of the supply at an average of 70 degrees Fahrenheit (slightly below room temperature). All factors kept constant, a gallon of water requires about 8.7kj of energy to raise its temperature by one degree, translating in about 30 - 40 minutes for the water to climb up by the remaining 52 degrees and be considered safe.

Your best bet for how long it takes to heat up water with a good gas water heater is about half an hour.

The Gas Water Heater



Electric Water Heater

Generally speaking, gas water heaters tend to be cheaper and more efficient than electric water heaters. In fact, as long as you think along those lines, it’s worth noting that electric heaters are also slower than the average gas water heater.

Once again, all factors kept constant, you’re looking at about an hour or hour and a half to heat up about 40 gallons of water from room temperature into the safe zone. However, if you’re looking to improve this stellar performance even further, consider investing in a good rinnai tankless water heater. It’s your safest best at quickly heating water.

That said…

Electric Water Heater



Tankless Water Heater

Assuming you have a good tankless water heater in your hands, completely unflawed and of the top quality, a tankless water heater should do the job almost instantly.

The tankless water heater is relatively new technology, which, unlike other beforehand mentioned water heaters, doesn’t store any water on its own. Since there is no stored water to be heated and in the process of constantly consuming energy, there’s theoretically no limit to the amount of water being supplied and heated as it transfers through the device and straight into the home, you have on your hands an unlimited supply of almost instantly hot water.

It’s a novel idea, and relatively new to the market, but a good tankless water heater is your safest bet for a ready supply of fresh, hot water. That way, you don’t ever have to wait for your water to heat up, and you save lots of energy in the process. All you need is a good tankless water heater.


Solar Water Heater

Solar Water Heater



The solar water heater comes last on the list but is by no means incapable of achieving the desirable results, at times even evenly matching the amount of time required by an electric water heater.

Typically, solar energy is converted to electric energy and this is used to heat up the water, but, of course, your main hindrance is, well, the sun. On a nice, hot sunny day, it should take about an hour to an hour and a half. Better is that you have a backup power source. A dull cloudy Monday won’t affect you in this case.

How long does it take for a water heater to heat up? It really depends on the technology you’re using, but your safest bet is a good tankless water heater - it’s almost instant!

Water Heater Expansion Tank Installation

All the water supplied in homes is usually contained in a centralized underwater tank. From there, the water is then distributed to homes all over the neighboring regions. However, basic physics tells you that when water is heated, it expands, as mentioned in Rheem tankless water heater reviews.

Normally, in older homes, the expanded water used to push back into the water main or the individual homes themselves, causing a backflow of pressure.

However, most homes today have backflow prevention valves which stop the water in your home from reentering into the water supply. These valves can be placed inside water softeners, in the pressure regulating valves or on the water meter itself.

Once again, the expanded water now has nowhere to go and the water pressure in the house's pipes can increase dramatically, most times to the point where the pressure valve discharge pipe starts dripping.

What’s a Hot Water Expansion Tank?

This is where the thermal expansion tank comes in. It has an internal air bladder which absorbs the expanded water and protects your precious plumbing, appliances and the water heater. For basically these reasons, most homes now need a thermal expansion tank (and, most times, a properly adjusted pressure regulating valve). In fact, not having a thermal expansion tank is the most common reason for a dripping discharge pipe.

The water heater expansion tank installation usually happens close to a water heater and may be installed in any orientation. Internally, there’s a flexible diaphragm which divides the tank in two - the “wet” side, which creates a connection to the plumbing system and a “dry” side, which features a valve that allows the pressure of the tank to be adjusted as needed.

Water heater expansion tank installation – How to do it?

Nine out of ten times, the water heater expansion tank installation is done on the cold water supply of a domestic hot water tank, since here is where it’s’ most effective. The process itself is fairly easy and usually only requires a tee fitting to be added to the water line. Here are a few factors you need to consider first.

The Positioning

The first thing you have to do is decide where you want to install the water heater expansion tank. Obviously, the tank has to be installed between the cold water shut off and the water heater inlet, but you still have to decide where the tank itself will sit.

The Orientation

Most tanks will work regardless of the orientation. However, some orientations hold their own advantages. For instance, a tank installed vertically with the air side up and the tank’s bladder ever happens to fail, the tank may continue to function (albeit at a reduced capacity) until all the air escapes from the tank.

However, if the tank is installed with the air side down and the bladder unfortunately fails, all the air will immediately move to the top of the tank, and the tank will fill completely with water.

The actual process- Installing the water heater expansion tank

Now that you’ve decided where the tank will connect to the plumbing system, also being where the tank will spend the rest of its life, it’s time to start the actual installation of the water heater expansion tank.


Turn off the water

First things first, you have to figure out how to turn off the water heater, and then turn it off. Afterward, you’ll have to locate the cold water supply shutoff valve and turn the valve to off position. Finally, turn on the lowest hot water tap in the house. This will release any built up pressure, also preventing water from spraying out when you cut the pipe in the next step.


Mark and cut the pipe

Using the tee as a guide, mark the pipe where you’re going to install the tee then cut the pipe at the positions you’ve marked using a pipe cutter.

If you don’t have to cut the pipe, it’s safe to skip this step.


Install the tee

Solder, snap, or twist the tee into place and then install any extension pipes required to reach the tank’s final resting place.


Check the system pressure

At this point, you’ll want to close the faucet and open the shutoff valves. Turn on all the hot water fixtures in the house until water flows normally to ensure the system is filled and is at full pressure. Check for any leaks and repair them.

Attach a pressure gauge to any part of your plumbing and open the valve to get a reading. If the pressure is not within the normal range of 40 – 80 psi, you’ll have to take steps to correct it.


Pre-pressurize the tank

Almost all water heater expansion tanks come pressurized from the range of 12 – 40 psi, but before you install the tank you’ll have to match the system pressure. Start off by removing the protective cover from the air valve on the tank.

You can use a tire gauge to check the pressure and a bicycle pump, or compressor, to fill the tank and match the system pressure of the tank.


Mount the tank

Once you’re done, attach the tank to the plumbing, and mount it using your straps and/or brackets. Turn everything on, and then check for any leaks.

You’re pretty much done, so stand back and revel in your success. You know about the water heater expansion tank installation and you can tell others about it.

Best Tankless Water Heater Reviews – Top 10 of 2016 – 2017

If you’re tired of the same old bulky tank water heater, you should consider browsing for something as innovative and energy efficient as a great tankless water heater. The tankless water heater reviews are presented to you in this article in order to help you make the optimal choice.

The in-depth tankless water heater reviews within the following content are sure to provide you with verified and specific information that you will require if you wish to educate yourself on the matter of the best tankless water heaters on the market.

While shopping for any type of product, especially those that they will be installing within their household like steam showers or water heaters, consumers usually spend large amounts of time (i.e., to read best steam shower reviews). It is often very hard to decide which product you will opt for once you narrow your choices down, but it doesn’t necessarily mean that you’ve found all the best ones.

In order to remove this lengthy obstacle for you, we have devised this extensive list of the best tankless water heaters currently on the market, which will elaborate in detail everything one should consider before purchasing a product like this.

After some reading, and with a little luck, you will be able to firmly decide which exact tankless water heater to purchase and why. It is extremely important to go through this tedious process, but we’ve made it an easy task for you.

The Best Tankless Water Heater Reviews

First of all, let us introduce our top recommendations before we step further into providing the specifics of each product mentioned in the reviews:

  • StiebelEltronTempra 24 Plus Electric Tankless Whole House Water Heater, 240 V, 24kW
  • Takagi T-KJr2-IN-NG Indoor Tankless Water Heater, Natural Gas
  • Rheem RTG-64XLN 6.4 GPM Low NOx Outdoor Tankless Natural Gas Water Heater
  • Takagi T-H3-DV-N Condensing High Efficiency Natural Gas Indoor Tankless Water Heater, 10-Gallon Per Minute
  • EcoSmart ECO 27 Electric Tankless Water Heater, 27 KW at 240 Volts, 112.5 Amps with Patented Self Modulating Technology
  • Rinnai RUC98iN Ultra Series Natural Gas Tankless Water Heater, Concentric/Twin Pipe Installation
  • Rheem RTGH-95DVLN 9.5 GPM Indoor Direct Vent Tankless Natural Gas Water Heater

1. Stiebel EltronTempra 24 Plus Electric Tankless Whole House Water Heater, 240 V, 24kW

2 person sauna

It weighs 15.4 pounds and its dimensions are 16x14x4. It has the working pressure of 150 PSI(Pounds per Square Inch), at a voltage of 240V, wattage of 24W and amperage of 2x50. It requires no batteries and it operates according to a digital control panel with a hinged cover for ease of access.

What also makes this product desirable is its heavy-duty German revamp of the old, bulkier version. It saves energy equivalent to 15%-20% kW/H when compared to the classic tank water heater and it allows users to adjust the temperature as simply as pressing the dials at their fingertips.

It also comes with the Advanced Flow Control feature, which automatically adjusts the water flow so as to eliminate bothersome temperature fluctuation. This allows for an interrupted showering experience, meaning that the user doesn’t need to worry about the remaining hot water for the entire duration of the bathing process.

It has a maximum temperature increase of up to 92 degrees Fahrenheit, and it’s quite easy to install. It comes with installment instructions that won’t be troublesome to follow, allowing for a quick and easy DIY experience. Keep in mind that you wouldn’t want to install it in your bathroom only, as it will heat water in your entire household. You would preferably wish to place it where its buttons are made more accessible.

The said stats make the Stiebel Eltron Tempra Tankless Water Heater an excellent choice when it comes to making purchases in this line of products, which is also why we have chosen to place it this high on our list of reviews.

Things I like  

Things I don’t like

  • Uninterrupted household-level heating
  • Built-in control panel
  • Easy installment instructions
  • No venting required
  • Extensive electric supply requirements
  • Considerable price

2. Takagi T-KJr2-IN-NG Indoor Tankless Water Heater, Natural Gas

cool tankless water heater

This superb tankless water heater comes from Japan, with convenient dimensions of 6.7x13.8x20.3 inches, weighing 38 pounds.

The Takagi T-KJr2U-IN-NG works on natural gas, which leads to enormous energy bill savings over longer periods of use. It can produce enough hot water for up to two bathrooms in warmer weather, and it also includes Ultra-Low NOx regulations of less than 14 ng/J (<20ppm). In other words, it is as environment-friendly as a gas-fueled water heater can be.

It is recommended for residential use, mostly for that of medium and small apartments, while it can still be used in any large home to heat a single bathroom. Its lack of size and capacity is replaced with other important qualities.

It has an energy factor of 0.82 for Natural Gas, making it a powerful gas-fueled tankless water heater. Its maximum flow rate of 6.6 GPM (Gallons Per Minute) at a 35F temperature rise (or 3.3 GPM at 70F rise) makes it a small but viable household appliance.

It comes with both a remote control and a power cord as standard features, with Category III stainless steel venting that is easy to install and has a very long lifespan, leading to a 15-year warranty for single-family domestic use.

It also comes with a wide variety of safety features, such as freeze, overheat and surge protection, as well as troubleshooting diagnostic codes, designed for the optimal safety of the user.​

Things I like  

Things I don’t like

  • Natural gas
  • Ultra-Low NOx regulations compliance
  • Remote control
  • Economical pricing
  • Requires venting
  • Low area of coverage
  • Warranty reduced for commercial and multi-family use

3. Rheem RTG-64XLN 6.4 GPM Low NOx Outdoor Tankless Natural Gas Water Heater

great tankless water heater reviews

This terrific tankless water heater bears some resemblance to the above mentioned Takagi, but its arsenal is devised of different qualities. While its competitor is a great match for any apartment dwellers, the Rheem RTG-64XLN Tankless Natural Gas Water Heater was designed for high ground. The Rheem tankless water heater reviews will provide more useful information to you.

Its dimensions are 10x14x26 inches and it weighs 38 pounds, with a 120V AC voltage (plug or Hard-Wired). It originated in the US, and it was specifically made to fit the needs of high altitude inhibitors. It is an outdoor, wall-mounted tankless water heater that was manufactured to provide warmth all winter.

With the all copper heat exchanger and the OFW (overheat film wrap) to protect it, it brings an innovation to this line of products. It can stand the heights of up to 9,840 ft. elevation above sea level and it was designed strictly to be installed outdoors.

Its Ultra Low NOx burner brings the same qualities as the Takagi to the table, which guarantees a safe environment for all the mountain wildlife and vegetation. Its flow rate of 6.4 Gallons Per Minute, though, makes it a medium efficiency tankless water heater.

It comes in only one color (Gray), featuring additions for more convenient use, such as the digital remote control, manual gas isolation valve, 10 feet-long thermostat wire and the extra plug extension.

If you prefer gas more than electric ones, you can find several gas water heaters for sale

Things I like  

Things I don’t like

  • High altitude sustenance
  • Digital remote control
  • Thermostat wire
  • Natural gas
  • Most recent technology
  • Considerable price
  • Plug extension not included with outdoor models (must be hard-wired)
  • Transport packaging weight

4. Takagi T-H3-DV-N Condensing High Efficiency Natural Gas indoor Tankless Water Heater, 10-Gallon Per Minute

efficient tankless water heater reviews

Weighing in at 85 pounds and measuring at 11.2x17.8x24.9 inches is another Takagi tankless water heater, although it claimed a place on our list for different reasons than its predecessor.​

This reliable tankless water heater is the big brother of the one mentioned above, with a 199,00 BTU gas input and a four room heating capacity (three in colder climates). This Takagi product comes with a computerized management system, leaving the customer little to worry about.

It also runs on natural gas, and as such, satisfies the 2012 SCAQMD Rule 1146.2, relating to Ultra-Low NOx Emissions. It can be considered an optimal choice for large households and other spacious constructions.

Its on-demand endless supply of hot water, as well as compactness and energy conservation, make it a worthy competitor on the market, along with all the other features that it possesses.

Its flow rate of a staggering 10 Gallons Per Minute is almost unmatched by any competitor on the entire market, which is what earned it the honorable place on this list.

Things I like  

Things I don’t like

  • State-of-the-art safety measures
  • Superb spatial coverage
  • Natural gas
  • Astonishing flow rate
  • Noise pollution
  • Considerable size and weight
  • Very expensive
  • Warranty information isn’t publicly available and must be requested from the manufacturer

5. EcoSmart ECO 27 Electric Tankless Water Heater, 27 KW at 240 Volts, 112.5 Amps with Patented Self Modulating Technology

efficient tankless water heater reviews

The EcoSmart Electric Tankless Water Heater is one of the most contemporary products on this list, featuring a slick and modern design that provides an enjoyable visual experience, in addition to its many perks.

First of all, it’s made up of copper and stainless steel components that allow for efficiency, extensive durability and very easy replacement. Its size is also quite compact, averaging at a minuscule 17x17x3.75 inch. It’s super lightweight as well, weighing only 17.4 lbs.

On the other hand, it will save you just as much energy as any average tankless water heater, since its electrical capacity requirements are quite high when compared to other products, up to 27 kW, 240 volts, and 112.5 maximum power draw.

The temperature is so adjustable that you can shuffle in between mere one-degree increments as much as you like, while it also comes with a limited lifetime warranty and self-modulating technology. This innovative allows for an automatic modus operandi, enabling the user to just turn it on and use hot water as much as they need.

Although its power consumption may seem like an issue in itself, it still saves over 50% on water heating costs. This product is a viable solution for any technology pundit willing to shed some bucks on a very high-quality appliance.

Things I like  

Things I don’t like

  • Size and weight
  • Computerization of heating control
  • Remote control
  • Stainless steel
  • Affordable price
  • Extensive electrical supply requirements
  • Only 3 GPM flow rate in cold climates

6. Rinnai RUC98iN Ultra Series Natural Gas Tankless Water Heater, Concentric/Twin Pipe Installation

This is another Japanese best tankless water heater that comes with a variety of commodities. Here are Rinnai tankless water heater reviews: Weighing in at 82 pounds, with the measurements of 10x18.5x26 inches, it bears a lot of resemblance to Takagi when it comes to its 9.8 GPM flow rate.

It also runs on natural gas, offering the famous Ultra Low NOx Emissions, which make it suitable for any healthy environment without the risk of air pollution. It also comes with the concentric and PVC venting options, meaning it is rather easy to maintain.

The heat output power of 199,000 max BTU makes it a close relative to the Takagi yet again. However, this particular product comes at a significant price, regardless of the free shipping. In spite of it being worth the purchase, the consumers should be absolutely certain about choosing this tankless water heater after reading through all of the tankless water heater reviews.

The giants of this niche such as this product offer the most when it comes to energy saving, and should, therefore, be carefully considered, especially if saving on water heating bills is the primary goal of the consumer.

In the next article, I will cover Rinnai tankless water heater problems, rinnai tankless water heater price, rinnai complaints, and more detailed reviews.

Things I like  

Things I don’t like

  • Excellent flow rate
  • Coverage of a very wide area
  • Natural gas
  • Remote control
  • Requires venting
  • Considerable size and weight
  • High price

7. Rheem RTGH-95DVLN 9.5 GPM Indoor Direct Vent Tankless Natural Gas Water Heater

This giant of the Rheem industry places another champion on board: The mighty RTGH-95DVLN features everything we’re used to seeing from Rheem – and more. The stainless steel condensing heat exchange is an obligatory trait for every Rheem item, while this particular one also features a built-in electric blower.

The product also comes with an exclusive feature called Guardian overheat film wrap (OFW), as well as a digital display for temperature and maintenance codes. While it’s also easy to install, it allows for very easy access overall.

The two-pipe direct vent system provides a simple venting solution, while there is nearly unlimited use time to these tankless water heaters. Using the extra MIC-195 + the MICS, you can manifold up to 20 units.

At the weight of 79 pounds and the dimensions of 18.5x9.8x27.5, its viability comes as no surprise. It was made to be similar to its relative when it comes to operating at low temperatures, but this time it is an indoor water heater. Regardless, it can still withstand temperatures of up to -30F.

Extremely versatile and innovative, this Rheem tankless water heater earns its place on our list fairly easily.

Things I like  

Things I don’t like

  • Utilizes the latest technology
  • Natural gas
  • Retains its potential in low temperatures
  • Guardian overheat film wrap (OFW)
  • Fusion ability
  • High price
  • Requires venting
  • Only 1 year of warranty for parts

Tankless Water Heaters–Are They Right For You?

Tankless water heaters have been around for quite some time now, offering a whole new water heating experience by reducing bills and making it more momentarily interactive instead of a daily premise. With a tankless water heater, you don’t need to think about turning anything on or off beforehand. Simply flick it on whenever hot water is needed and it will provide as much as necessary. But, how to select a tankless water heater?

​A tankless water heater may appear complicated to an average Joe, while it’s actually anything but. It’s composed of no more than 7-8 parts, all of which are quite simple to grasp. Mainly, once you connect your water heater to your water supply and turn the shower valve, the cold water that enters it will trigger the water sensor, which will then signal the computer to start the heating process. The water will circulate around and through the ignited heat exchanger a few times, after which it will have the desired temperature.

​One of the few things that you do have to think about when it comes to using a tankless water heater is the price. They most definitely aren’t a cheap appliance, but some of them are quite affordable and yet extremely well-made. Consequently, an economical but great tankless water heater is an almost irreplaceable upgrade to your household.

Another considerable fact is that a good majority of these products is gas-powered, meaning you do need to plan gas tank replacements and such, but nothing more than that. However, if you decide to opt for one of the best electrical tankless water heaters, you don’t need to worry about that either. Your bill may go down only up to 50% if it doesn’t run on gas, but that is still more than enough of a reason to obtain this appliance. We will cover all the types later in the tankless water heater reviews.​

Types of Water Heaters​

​Now, how to choose a hot water heater? which type of water heater is the best fit for you? 

In total, there are up to five different types of water heaters, all of which come with a tank and require pre-heating, except the tankless water heater:

1. Storage tank water heater

This is the most common type of water heater available on the market. Nearly every household still relies on them nowadays and they are hugely widespread. Like the name suggests, they consist of an insulated tank where water is heated and then stored until needed, thus I need to determine how big water heater do i need. The water emerges from a pipe on top of the water heater.

It also contains a temperature and pressure-relief valve, which is opened when either exceed a preset level.

The natural gas water heaters usually use less energy and cost less to operate(by about half) than electric water heaters, though you should take note that gas models are more expensive at the time of purchase.

2. Heat Pump (Hybrid) Water Heater

These water heaters capture heat from the air and transfer it to the water. They use up to 60 percent less energy than standard electric water heaters. While they do cost more than electric-only models, the installation is quite similar and the payback time is short. However, they do not work well in very cold climates and they need to be placed in an area that stays 40 to 90 degrees.

Because the heat pump is on top, in this case, a hybrid water heater needs clearance up to even 7 feet from floor to ceiling. Also, you will need about 1,000 cubic feet of uncooled space in order to capture enough heat from the air, including a nearby drain to discharge the condensate.

​3. Condensing Water Heater

Condensing water heaters are a viable option in the case where you are heating with gas and need a unit with a capacity of over 55 gallons. It is completely gas-fueled and doesn’t have a supply of its own, meaning it’s only useful for gas-heated homes.

These models are comprised of a tank like a conventional water heater, but that which captures exhaust gasses that would usually go out of the flue, which is considered energy waste. The gasses are induced through a coil in the base of the unit, where the incoming cold water is able to absorb most of the heat.

4. Solar Water Heater

This recent water heating solution contains a roof-mounted cell that absorbs the sun’s heat, before transferring it to a specific fluid with antifreeze similarities in a closed-loop system that runs toward the water tank. During the summer, these heaters allow for an enormous increase in savings, which makes them the most appropriate for warm and sunny regions. The savings tend to suffer in colder and cloudy weather, though, which makes it a quite restricted saving option. The majority of the models employ a backup system that starts up when necessary.

Even with local and federal rebates included, it will take an estimated 10 to 30 years to make up for the spent cash. While it is certainly the most futuristic and technologically advanced solution on the market, the potential buyers are advised to thoroughly consider spending that much money.

5. Tankless (On-Demand) Water Heater

Finally, the champion of this line of products is all about momentary usefulness, which is its main selling point. Instead of storing water, the tankless water heater uses heating coils to increase the water temperature as much as needed. They’re way more energy-efficient than a storage tank, but they provide a limited flow of hot water per minute, which is estimated to be 3.5 gallons on average.

They are optimal for those who normally aren’t drawing water for more than one use at a given time, such as running a dishwasher and a shower simultaneously. For any smaller household or a specific room in a large one, this product is ideal. It cuts the water heating costs down to a bare minimum and provides instantaneous heat.

The tankless models are best used at homes that draw on natural gas to heat the water. Certain electric models may require a pricy upgrade on the electrical capacity of the household, but the overall monthly costs are still largely reduced once this installment is executed.

Tankless and Tank Water Heater Reviews and Comparison

Just in case the above-mentioned explanations don’t quite relay the importance and innovative capabilities of the tankless water heater, we have devised a comparison of the fierce competitors in order to clarify all the differences to the furthest extent. To make this simple, we’ve decided to address the most important details of both tank and tankless water heaters and compare them:

Life Expectancy

First of all, every customer would like to know how long their not-so-cheap product will last before needing repairs or replacement. Now, those two are completely different things, but generally speaking about the timeframe between time of purchase and the time of complete and utter uselessness, they may differ.

Allegedly, every tankless water heater with a 12-15-year warranty lasts barely half that long. It is said that this happens due to the product not being on the market long enough for the customers to actually overrule this myth. This issue can also be attributed to the way in which the manufacturers treat the warranty. The users of this product require monthly maintenance service and it comes at no low cost either. However, the manufacturers that stands behind this statement like to clarify the evident difference in monthly costs even with this addition in mind.

On the other hand, tank water heaters are known to last for up to 15 years with few malfunctions. Their functionality tends to get impaired by the same issues that weigh the tankless water heaters down, but they are made in a way that lets them function with a number of issues. Most definitely, tank water heaters are cheap to maintain, but to what extent should one be prepared to go in order to avoid frequent servicing? Is paying a full water heating cost every month still worth it? It’s really up to the consumer to decide.

We can tell you only one thing for sure. As long as you don’t void your warranty, you don’t have to worry about anything. Word has it that this occurrence is too frequent, with all the rules that the manufacturers demand on complying to. Then again, the sheer number of customers tells a different story. Ultimately, it is still up to you to decide to take up this risk or to stick to your old tank.


Both tankless and tank water heaters tend to encounter certain difficulties after a time of service. Of course, a tankless water heater won’t have any tank-related issues, but its set of intricate parts requires monthly monitoring and servicing. This claim is also backed by the fact that tankless water heater warranties usually cover the heater itself for 15 years, while the parts are only covered up to 5 at most.

​It’s difficult to weigh 5 years of lower bills versus eventual additional purchases in order to keep your tankless water heater going, but depending on how much you pay to keep your tank water heater running every month, it may well be worth it. Aside from part malfunctions, tankless water heaters tend to “lime up” where there is hard water, which may result in frequent pipe replacements. They need to be well-drained before a longer period of inactivity in colder climates, or the pipes may suffer significant frost-induced damage.

​Being the big brothers of tankless water heaters, tank water heaters require considerably less attention. They may run into issues like sediment buildup, but they’ve been proven to run smoothly even with a large portion inside, resulting in a minuscule 5% efficiency decrease in the worst conditions. Any sort of tank water heater maintenance is also sure to cost far less than any tankless water heater would subtract from your wallet. The repairs are cheaper, the parts are more available, it’s been on the market for decades upon decades, and it’s simply more reliable due to its development over the years.

​All in all, while the difference in servicing costs may be considerable, there is still a lot more that the tankless water heater puts on offer. Also, the great tankless water heaters mentioned on this list were manufactured with various improvements relating to this specific area. This is the factor you need to take into account before anything else when purchasing one, but if you decide it’s worth it, go right ahead.

​Energy Savings

​Of course, the main selling point of every tankless water heater out there is that it spends energy only when needed, which should significantly reduce energy consumption. This is the very reason behind their mass production and market popularity which has brought them to your web browser. Yet, how true is this claim in reality?

​Truth is, a lot of the computerized tankless water heater software constantly operates on electricity. Consequently, if you aren’t using it at a given time, that doesn’t mean it still isn’t spending valuable energy and racking up your bill. A way to go around this issue is to always completely turn off your tankless water heater or buy one with an automatic pilot light, that will shut down whenever it’s not in use. They do save power, but not as much as you’d expect, if not given proper treatment.

​Tank water heaters are well-known for spending considerable amounts of energy on a more than regular basis. The plethora of hot water that it offers needs constant heating to remain at the desired temperature, which unavoidably takes a large portion of electricity. One of the largest costs that a large household pays per month most often comes from sustaining their tank water heater. The amounts of money that consumers have to spend on this appliance eventually force them to opt for something as innovative as a tankless water heater.

​There is no contest in this category. Tank water heaters take so much energy to run that they can’t even be compared to a properly run tankless water heater, which is the absolute winner of this particular comparison.


​One of the weaker selling points of any reliable tankless water heater is the actual purchase cost, aside from any additional costs that may require coverage during its lifetime. The better it is, the more expensive it is, the more expensive it is, the more expensive the eventual part replacements are. This is the undeniable truth about tankless water heaters.

​One way to put this is that the purchase is more worth it the more you pay. Basically, if you have to pay a lot for it, it is more likely to be an outstanding tankless water heater. To put it simply, you require the same amount of energy to heat up the same amount of water, no matter how you do it. Now, condensing tankless water heaters can put their innovative technology to use and reduce this cost significantly, but their prices are situated in the high range.

​Tank water heaters come at a lower initial price, while they will take way more money on the long run. A cheap tank water heater may even come at a price four times lower than that of a viable best tankless water heater, but it’s sure to drain large amounts of bill money over the course of a few years. This is why tank water heaters are going out of fashion, at the pace of frequency of choosing to pay more first in order to pay less later.

​Therefore, it’s recommended to put together a calculation of yearly savings with a tankless water heater that you’re considering for purchase and a tank water heater that you already own and measure them up. If the amount of money that you will spend on maintaining your tank water heater is greater than that of the tankless water heater’s initial price, the calculation is clear. Whether to pay less now and way more over time or vice-versa is completely up to you, but the market speaks for itself.


​When it comes to the multitude of services that tankless water heaters offer at the same time, as opposed to those that tank water heaters boast, it’s eventually down to a few key factors. The size of the object in which you will be using your water heater and a number of household occupants is a key factor. Both of these product variants have a recommendation, depending on the customer.

​Tankless water heaters usually don’t offer the option of heating water for more than two places at the same time. If you are taking a shower while your washing machine is running, be ready for some unavoidable heat fluctuation. However, there are some remarkable tankless water heaters that can rid you of this issue. This is why the tankless version is recommended for smaller homes and apartments, while even smaller living quarters such as cabins are an ideal place for their service.

Tank water heaters usually take care of the entire household at any given time, depending on their size and the amount of hot water stored. They were essentially made for this purpose, so they are mostly unchallenged by the performance of tankless water heaters when it comes to this section. However, dwellers of any smaller construction basically have no need to use them, as they tend to waste both space and money in these conditions.

​You should also keep in mind that certain tankless water heaters were specifically designed for colder or warmer climates. This essentially means that if you live in an area with extreme weather conditions, you’re way better off with the tankless variant. Those made for hot climates use the heat that’s abundant in the air to serve their purpose, while the ones designed for cold weather are much less likely to lose function in such conditions, as opposed to basic tank water heaters.

​Additional Issues

​The tankless water heater is a rather new product, and it will take the necessary time to perfect. Hence, it still faces certain problems that no tank water heater has had before. Although this may sound like a serious thing to consider, they are mostly trivial matters that are unavoidably included in the service of tankless water heaters.

​“The Cold Water Sandwich” is something that the newest tankless water heaters have overcome with state-of-the-art heating technology. Mainly, once the flow of water is halted, the water in the pipe will run cold, and that in front of the heater will trigger the heating again. This process causes a wave of cold water in between the hot, but it’s nothing to actually worry about anymore.

​While tank water heaters will instantly provide you with hot water once you rotate the red tap, the tankless version will let some cold water slip before the heating process overcomes the water temperature. This is also a problem of the past, which the tankless water heaters mentioned above have been rid of.


​While it’s not a bad choice to stick to your old tank water heater, there are various advantages worth considering if you’d like to go tankless. From minimized monthly bill costs to on-demand heat and climate-related advantages, a great tankless water heater will take your water heating process to the next level, with numerous benefits, at a considerable price.

​Tankless Water Heater Reviews: Pros and Cons

​The above comparison told you quite a few things about this product, but this section will cover every reason why and why not to purchase a good tankless water heater.


  • Large decrease in monthly bills
  • On-demand hot water
  • Additional storage space
  • Environmentally friendly
  • Long-term warranty
  • State-of-the-art heating technology
  • Remote control
  • Operating software computerization
  • 20-year life expectancy
  • Climate adjustability


  • High price
  • Large installation cost for tankless water heater
  • Many installation requirements (e.g. rewiring your entire house)
  • Large maintenance costs
  • Low coverage
  • Possible temperature fluctuation
  • Power source-dependent location
  • Lower warranty for specific parts

​Electric or Natural Gas Tankless Water Heaters?

​Once you opt for a reliable tankless water heater, you may be faced with the dilemma of which type is better, and why. Rest at ease, for we’ve prepared a thorough comparison of both variants available on the market. Let’s dig right into it, starting off with the most important factor:

Initial cost​

​When it comes to the initial product price, electric tankless water heaters have a significantly lower cost than their gas counterparts. Generally, whole house electric tankless water heaters cost somewhere around US$500-800, whereas gas tankless water heaters usually cost US$1,000 or more, especially if they encompass better quality equipment with electronic ignition systems. The installation costs are not included in the prices mentioned here (more on that below).

​Efficiency / Operational Cost

While gas tankless water heaters may be considerably more efficient than gas tank water heaters, their efficiency most often peaks at 80-85%. Inversely, most electric tankless water heaters peak at 98+% efficiency. Even though natural gas is usually a way cheaper input fuel than electricity per BTU of output power, this benefit is often outweighed by the higher efficiency of the electric tankless water heater, its longer service life, and cheaper installation.

To top it off, electric tankless water heaters cost much less than the majority of tankless gas models, assuming that you own the best electric hot water heater. What’s more, gas prices usually fluctuate more dramatically than electricity prices, while most economists agree that gas prices are now expected to rise substantially in the years to follow, whereas in most areas, the price of electricity should be relatively stable or at least on a much slower rise.


​Gas tankless water heaters contain complex venting systems and have many combustion air supply requirements, especially if installed in a confined space. The existing gas lines and venting ducts are seldom usable. For the requirement of side wall venting, things can get even more complicated. Thanks to their high gas consumption, the existing ventilation systems rarely fit the norm. The bottom line is that these requirements may make installation quite expensive.

​Electric tankless water heaters often aren’t bulky, around one-third the size of a gas tankless water heater. According to their convenient size and the fact that they require no exhaust gas ventilation, they can be placed virtually anywhere not feasible to install a gas tankless water heater.

Consequently, electric tankless water heaters can usually be located closer to the actual usage point. They can be placed in a closet, in a crawl space, under a sink, or a wide variety of other areas where the traditional tank water heaters and gas tankless water heaters cannot. Unless an electric system upgrade is required, the installation of electric tankless water heaters is usually much cheaper than that of a gas tankless water heater.​

Warranty, Lifespan, and Maintenance

Electric tankless water heaters require little to no maintenance. In fact, aside from cleaning the inlet screen filter from time to time, electric tankless water heaters generally do not need any maintenance. On the other hand, gas tankless heaters need to be inspected annually by a skilled technician in order to ensure safe fuel combustion and performance.​

In the event of an issue, electric units are inherently easier to troubleshoot, diagnose and repair. The pure simplicity of their design means they have a much longer lifespan. Gas tankless water heaters possess very complex heat exchangers and fuel control, which are much more difficult to operate on in the field.

Energy Source Availability

The availability of adequate electric energy, propane or natural gas, can naturally affect the decisions as to which exact type of tankless water heater is best for your business or home. Electric tankless water heaters are sorted amongst very high power appliances. Since they heat water completely on demand, their top electricity needs are quite substantial, even though their total energy consumption is noticeably lower than traditional tank-type water heaters.

Accordingly, it is usually required that a home has a 200 AMP, 208 to 240V electrical service in order to run an electric tankless water heater (the smaller ones that are suitable for warmer climate areas can usually be installed on even 100, 125 or 150 AMP electrical services). Certain homes or business don’t possess such electrical power and upgrades can often be expensive.

On the other hand, the installation of a gas tankless water heater will almost certainly prove to be uneconomical if the building does not have an existing natural gas or propane service at its disposal, or if the diameter of the incoming gas line is insufficient (which is a common occurrence). You can also find the list of best gas water heaters 2015 and 2016 for more details.

​Water Usage Habits and Needs

​For a majority of homeowners and businesses, their water usage patterns and needs won’t affect their choice of what exact type of water heater they should opt for. Electric tankless water heaters have the ability to provide from 3 to 8 GPM of shower temperature water, depending on the model selected and climate.

​The said stats are often more than enough to please the needs of nearly any family, while gas tankless water heaters are there to live up to even the highest expectations. Generally speaking, a large amount of gas tankless water heaters on the market are capable of providing somewhere around 10GPM, which is sure to satisfy any consumer’s flow standards.

​Homeowner Preference

​Due to safety reasons, certain homeowners do not feel comfortable with using natural gas or propane to power any of their home appliances. In such situations, an electric tankless water heater is the optimal choice for peace of mind. Other homeowners tend to have preferences for one type for varying reasons, including the availability of energy (gas or electricity) in the event of a major regional catastrophe such as a natural disaster. Other users may still prefer one type over the other due to environmental reasons.

​The best electric tankless water heaters have extremely high energy efficiency, with more than up to 98% of the electric energy supplied to the units actually being used for water heating purposes. On the other hand, gas tankless water heaters usually have an energy factor lower than 85%, while they also contribute to greenhouse gas emissions.

​Ultimately, every homeowner should weigh their own needs against the pros and cons of both alternatives. In spite of that, the market reports an overall favorite when it comes to casual households. A majority of small and medium homeowners and apartment dwellers usually go for the electric type due to the high initial cost of gas systems (including installation), their maintenance requirements, inherent complexity and shorter lifespans and warranties.

​Installation costs

​It takes a considerable amount of money to get every great best tankless water heater installed and running, but once you’ve made the purchase, it’s something you must unavoidably complete. We will now address any of your existing installation cost concerns.

First of all, the consumers that hire a pundit to install their tankless water heater should expect to pay either a flat fee or an hourly fee. The total installation cost varies depending on the type of tankless water heater that is being installed and the professional who installs it.​

Factors such as installing proper ventilation in order to prevent carbon monoxide poisoning and a complete alteration of the size of gas lines and fittings tend to take an average of 10 hours. Consequently, the customers that decide to install a gas tankless water heater are bound to face significant costs.​

Electric tankless hot water heaters don’t take nearly as much time to install. The ones such as a point-of-use electric water heater can even be installed right under the sink by a plumber with some electrical skills. The electrical timer, electrical outlet, and water supply lines required for the installation of this type of water heater usually don’t have a high total cost. The average time that this specific product takes to install is a mere two hours, which allows for the consumers to pay significantly less.

Another factor that affects installation costs is a reduction offered on specific tankless gas hot water heaters. Consumers can make great use of a tax credit on products that qualify with Energy Star. Tankless water heaters with the Energy Star symbol are energy-efficient appliances that comply with the government standards. Such products are also highly rated in quality, features, and performance.

​Consumers will also need to pay for the material and labor costs for the other parts that are needed in the installation. The accessories required for a tankless water heater usually include a tankless gas connector kit, termination vent kit, the two-piece lead-free brass tankless water heater valve set, in conclusion with fittings and mounting hardware.

​Condensing vs Non-Condensing Tankless Water Heaters

​Since the heating process in any tankless water heater including the best tankless water heaters in the list above works through combustion, it is necessary to know the combustion differences between condensing and non-condensing tankless water heaters.

​During a typical combustion, the tankless water heater burns the hydrogen content of the fuel, resulting in the production of hot gasses. One of those gasses is steam or vapor. Once that steam is cooled, it turns into water that is generally referred to as condensation. The condensation water is acidic (3-5 pH value) and thus corrosive, meaning it will corrode steel metals and other materials.

​A non-condensing tankless water heater will push the hot gasses outside through a vent, where they will proceed to cool down. The released gasses have temperatures of around 300 degrees Fahrenheit and thus need to be vented through non-corrosive venting materials capable of withstanding the heat. If your tankless water heater isn’t made of stainless steel or doesn’t have stainless steel secured venting at least, you are welcome to purchase stainless steel category 3 venting or better, at a significant price.

​The gases ejected from the tankless water heater contain up to 20% of the actual energy that heats the water, meaning a whole fifth of the heat-generating capacity is wasted by being exhausted into the open. The hotter the exhaust gases are, the less energy goes into heating the water, which is why non-condensing units have an efficiency average of 80%.

​Condensing tankless water heaters extract the heat stolen by the gases and therefore exhaust cooler gases, typically around 100 degrees Fahrenheit. Since the exhaust gases are made much cooler by this technology, you can afford to use a cheaper venting variant, as it can then withstand the low heat emissions.

​By managing to capture the residual exhaust heat and transfer its energy to the heating process, units with this technology are known for their remarkable 98% top efficiency. A condensing tankless water heater may be more expensive than the rest, but it is well worth it, considering its increased performance and reduced costs of various parts.

​Final Verdict

​With all of the newfound knowledge in mind, you can now be certain of any decision you make when deciding which product from this list to opt for. We will now proceed with the final comparison and our own personal favorite.

​For a mountaineer or any high altitude and cool climate dweller, products 3 and 7 are most definitely the optimal choice, due to their high frost resistance and the ability to benefit from unfavorable temperatures. This is as far as we will recommend them, due to the finer qualifications of the other 5 products when other climate types are in question.

​Products 2 and 5 are ideal for any apartment or small household, perfect for heating one room at a time. Product 2 runs on gas, while product 5 requires electricity. Both types will induce certain costs to run and set up, but they average out at about the same amount, while they are both very cheap and the most economical choices on this list.

​Products 4 and 6 both run on gas, take a considerable amount of money to install and they are the most expensive choices on this list. Regardless, these two products are the best large household heaters on the market with irreplaceable qualities. We would recommend nothing but these two products for the heating purposes of any spatial home or building.

​Finally, product 1 can take up the roles of almost all of its competitors, due to its Advanced Flow Control technology that none of the other products can offer. This perk allows it to cost significantly less than any large-area tankless water heater, while still performing its duty with prime quality. As it belongs to the mid price range in comparison to the other products on the list, and yet just as effective as any of them, we consider it to be an outstanding tankless water heater.

​Every passing day, significant amounts of homeowners decide to opt for a tankless water heater as a result of the realization of its benefits. It can be quite bothersome to try and find the finest available choice on your own, but we’ve hopefully ridden you of that issue.

Each brand has its own advantages and disadvantages. We will cover more brand reviews in the next articles. Some issues we are interested in are: ​Noritz tankless water heater reviews, navien tankless water heater reviews, navien tankless water heater problems, navien npe 240a problems, navien 240a complaints, navien ncb 240 problems, tankless water heater prices (i.e., navien npe 240a price, rinnai r75lsi price), and how to size tankless water heater.

​The tankless water heater reviews are sure to be your faithful companion when it comes to choosing an appliance of such importance.

​Think wisely, pick well, and enjoy your new state-of-the-art best tankless water heater!