The 11 Best High Efficiency Natural Gas Water Heaters (2022 reviews)

The Rinnai tankless water heater is the epitome of what a great heater should be. The Rinnai Tankless Water Heater features ideal for the hot water demands of large homes. With rinnai, hot water is always available to you, no matter how much or how often you need it. This v53den compact tankless water heater has a longer lifespan since water is heated on demand only, which saves on energy costs.

Lastly, the rinnai tankless water heater has good build quality, allows for water flow rate, It is sleek and has a safe design.

Almost all customers quickly discovered that the heater would keep up no problem. Also, a few also found that the heater is not related to pressure tank size, but the gal/ min capacity of your pump/utility company, along with how many outlets are demanding water at the same time. In addition, they strongly agree that the water heater is very efficient and runs hot in under a minute. Therefore, customers were eager to recommend it to friends and would-be buyers.

Top Customer Quotes:

This comes with an isolator kit.
This is perfect for space saver,ss it is guaranteed to last and has a modern design.
This is very small, it is great with an awesome price and has a space-saving design.
This does not need a condensate drain.

Best For Stainless Steel: Camplux Enjoy Outdoor Life High Efficiency Natural Gas Water Heater

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The camplux enjoys outdoor life. high efficiency natural gas water heater's material feels more premium than its price would suggest. The camplux enjoys outdoor life. High efficiency natural gas water heater provides you with endless hot water, is handy, It is best for digital displays and has a water heater design. . Also, the heater will for excellent value, It works great and has an efficient design.

The heater is fully automatic, is used for constant temperature, It was bought again and has a safe design. Most importantly, the camplux enjoys outdoor life. The high - efficiency natural gas water heater is very happy, It pipes hot water and has a tankless design.

Most buyers found that the heater is a great replacement for the old water heater. In addition, they strongly agree that the heater will always have hot water for shower. Moreover, a few say that this heater would cost 4 times this amount at either store. In short, many have used the heater for more than a few months without letup, and it shows no sign of giving up.

Top Customer Quotes:

This is easy to install, easy to use and beautiful to look at.
This is an indoor unit, so day to - day use doesn’t require freeze protection.
The same time as a regular water heater would take to move hot water.
This has features for indoor applications.

Best For Temperature Control: Rinnai High Efficiency Natural Gas Water Heater

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Compared with other heaters in this category, the Rinnai high - efficiency natural gas water heater has a convenient design. The Rinnai high efficiency natural gas water heater heats water fast, is single, It makes for easy installing and has a controller design. Make sure this fits by entering your model number. In addition, this provides you with endless hot water, It makes for great hot water and has a standing design.

Lastly, the Rinnai high efficiency natural gas water heater is designed for water inlet,s is clear, It is perfect for off-grid and has a compact design.

Almost all customers agree that the heater is not rated for it, it will void the warranty. In addition, a few say that the heater is easy to install and produces as much hot water as needed on demand. Also, they also found that the tankless water heater has enough capacity to heat the area that it is servicing.

Top Customer Quotes:

Energy and space efficient: space-saving design conserves energy as it heats only when necessary.
This is a lower end indoor gas unit and it works fine.
This is designed to run off of a tank sized for the whole house.
This is powered by 120vac and is only on when the unit is running.

Best For Space Saving: Noritz High Efficiency Natural Gas Water Heater

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Compared with other heaters in this category, the Noritz high efficiencynatural gas water heater has a convenient design. The Noritz high efficiency natural gas water heater is soft and it makes for easy install. Make sure this fits by entering your model number. Further, it has a little unit, is very happy and it is best for digital display.

The heater provides you with endless hot water, is plenty hot and it is great for space saving. In addition, it is worth the money and it has a display. Finally, the Noritz high efficiency naturalgas water heater comes with a water connection and it works great.

Most buyers quickly discovered that the heater is not a simple swap, all pipes lined up, etc, but again, four generations ago, so who can complain. In addition, a few say that the heater does not, the remote can change temperatures without adjusting dip switches in the main unit. Moreover, a few say that this unit is a high efficiency heater and exhaust temperatures are low. Overall, many customers have used the Noritz highefficiency natural gaswater heater for more than a few months without any complaints, and it shows no sign of giving up.

Customers say that getting a tankless water heater connection kit and whole house mineral water filter, along with heater is useful.

Top Customer Quotes:

This can be vented with a scheduled 40 pvc pipe and fitting.
It also takes longer to get hot water than with the old tank water heater.
can be vented with a scheduled 40 pvc pipe and fitting.
This is easy to install and adjust the temperature of water.

Best With Electric: Fogatti High Efficiency Natural Gas Water Heater

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We would, of course, be remiss if we didn't mention the Fogatti high efficiency natural gas water heater for daily purpose. The Fogatti High Efficiency Natural Gas Water Heater features multiple safety protections and also comes with 7.5 gpm and 180, 000 btu heating capacity through natural gas intake, It is suitable for 3-5 outlets for the whole family. It won't take up your indoor space, keeping your home more airy and having a more comfortable living experience. In addition, it works fantastic, it is easy to adjust and has a safe design.

The heater is for outdoor installation, It heats up quickly and has a portable design. Further, the heater would be perfect with endless hot water, is clear, it is priced right and has a controller design. Finally, the Fogatti high efficiencynatural gas water heater works flawlessly, allows for pressure relief valve, It is designed with multiple safety protection and has a waterheater design.

Most buyers find that the heater will work if you get a unit that is not faulty. And, they strongly agree that the heater is suitable for installation and use at normal altitude, Unfortunately it is not suitable for use at an altitude of 77, 00 ft. Also, a few strongly agree that the liquid propane tankless water heater provides you with hot water instantly, saving you valuable time, as well as energy and water.

Top Customer Quotes:

This is a standard 3 inch type b (double wall) vent pipe.
If it is sized properly, it should be able to endlessly provide hot water.
This works well with good customer service and has a cool design.
This is great for backyard use or adu.

Best For Overall Length: Ez Tankless High Efficiency Natural Gas Water Heater

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Here, we review a heater that manages to win our hearts. It's the ez tankless high - efficiency natural gas water heater and it's widely considered as one of the all-around great heaters you can buy. The Ez Tankless High Efficiency Natural Gas Water Heater is affordable, has good build quality, it is white and has a controller design. Can you vent through an exterior wall to the outside or must you go vertical thru the roof. The ez ultra water heater is designed for use in up to a 2 - bath home.

Most importantly, the ez tankless highefficiency naturalgas water heater is smart, works amazing, it is clear and has an efficient design.

Most customers found that the heater has great customer service. Moreover, a few say that the heater protects it from freezing backdrafts. In addition, a few strongly agree that the heater is providing more than ample hot water for a one and half bath house in Seattle currently.

Customers discovered that getting a whole house mineral water filter, along with heater is useful.

Top Customer Quotes:

This is more than enough to hold the entire drain volume.
This is good for a quick 10.
This is turned off, the tankless heater will automatically extinguish itself.
This is an easy to understand advanced technology display.

Best For Kitchen: Rheem High Efficiency Natural Gas Water Heater

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The Rheem High Efficiency Natural Gas Water Heater's superior materials make sure that it ages well with use. The rheem high efficiency natural gas water heater gives the top-tier heater a run for their money by offering flagship specs at a much more affordable price. In short, with a 4.2 rating and more than 264 buyers, the rheem high efficiency natural gaswater heater stands as the best choice.

"You can connect 2 similar units using an rtg20040 ez link cable. " - says, one customer. To sum up, at the price, they believe that they got a steal of a deal with it.

Why We Like This:

Lot of satisfied buyers.
Delivers what they promise.

Best For Pipe Fittings: Takagi Tankless Water Heater

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Not everyone likes to purchase a heater for their daily purpose, but the Takagi Tankless Water Heater would be an anomoly. The takagi tankless water heater is smart and it is good for energy conservation. Make sure this fits by entering your model number. Moreover, the heater features, no pilot light to have to worry about.

The heater is easy to use and it is good for energy efficiency. Finally, the takagi tankless water heater is great for space savers and it is ideal for space saving.

Almost all buyers opine that the heater comes with a vent assembly. In addition, they also found that the heater is used to buy American products. Also, they strongly agree that the heater comes out to replace the gas valve. To sum up, the tone of buyers is very positive and we believe that the heater suits the purpose.

Customers discovered that getting a whole house mineral water filter, with this heater made their life much easier.

Top Customer Quotes:

This is single, allows for easy installation and it is made for the bottom line.
Satisfies the 2012 scaqmd rule 1146.2 for ultra-low NOX emissions.
This will make the service much easier.
This comes with a warranty card and it can be protected by a recirculation pump.

Best For Energy Conservation: Takagi High Efficiency Natural Gas Water Heater

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Takagi offers a variety of heaters for personal choice and yet maintains quality in all the variants. The Takagi High Efficiency Natural Gas Water Heater works great and it is ideal for space saving. Make sure this fits by entering your model number. Moreover, these features, no pilot light to have to worry about.

Finally, the takagi high efficiency natural gas water heater works like a charm and it is great for energy conservation.

One customer says - "This is easy enough to install if you have a mechanical background. ". Almost all customers agree that the heater is in warm climate, Houston, TX, might be different in northern climates.

Why We Like This:

Satisfies the 2012 scaqmd rule 1146.2 for ultra-low NOX emissions.
Endless hot water, on-demand usage, compact, space saving, energy conservation.
New and hot releases.

Best For High Temperature: Camplux Enjoy Outdoor Life Tankless Water Heater

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We would, of course, be remiss if we didn't mention camplux enjoy outdoor life, tankless waterheater for regular use. The Camplux enjoys outdoor life. The tankless water heater features imported pcb with precise temperature control, never blows hot and cold in turn, making it perfect for on-demand hot shower at home. The water valve needs to be closed to make the water heater in standby status before you set the temperature above 122. The tankless gas water heater comes with a csa certified balanced combustion design, v - type stainless steel burner, high heating efficiency up to 89.98.

The heater is residential, is great for thermal efficiency, It would be perfect with endless hot water and has a tankless design. Lastly, the camplux enjoys outdoor life. tankless water heater is good for electronic ignition, It comes with water connection and has a water heater design.

In conclusion, for most buyers, Camplux Enjoy Outdoor Life product was just what they wanted.

Why We Like This:

The gas water heater comes with a direct - current frequency conversion fan.
This features pcb frequency conversion, intelligent control, temperature intelligent adjustment ensures comfortable constant hot water.
It is impossible to set a temperature exceeding 122.

Best For Fast Delivery: Rheem Water Heater

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If you want nothing but the most convenient heater, then Rheem Water Heater is the one you should definitely consider. The rheem water heater includes a flame sensor, overheat cut off switch, gas and water leak detectors, and exhaust and water temperature sensors. Note the color of your location on the map. Moreover, it is enabled, water waste is reduced by up to 1, 100 gallons per year.

The heater is very happy and it has low emissions. Also, it is smart, is ideal for small compact and it can protect for recirculation pump. Lastly, the rheem water heater is a series of high - efficiency condensing tankless gas water heaters designed for continuous hot water and 180, 000 btu.

Almost all customers agree that the heater is a natural gas unit. Overall, for almost all customers, it was what they were looking for.

Why We Like This:

Saving valuable space in your home.
This is required, otherwise the warranty will be void.
This provides instant hot water but also only provides it when needed.
This can be used with up to 5 bathrooms depending on the inlet temperature.