Top 10 Best Tankless Water Heaters of 2022

Have you decided to buy a tankless water heater? A typical person can’t imagine a water heater without a tank. Nonetheless, he/she doesn’t know the amount of energy it exhausts or the convenience of space it depletes! So, kudos to you as you chose to go for a tankless heater.

You know the benefits, don’t you? For instance, a tankless heater provides you with warm water 24×7 barring any hindrances. Moreover, it doesn’t take up a lot of space in your residence. And, we can go on and on like this. But, you are here to get the recommendations, aren’t you? So, here you go!

It’s not a cakewalk to dig through hundreds of products available out there. Guess what! We have worn your shoes and hand-picked the best of the best after considering multiple criteria. Let’s get right into the list.

Best Tankless Water Heater Of 2021

Do you want an electric tankless heater? If Yes, then Ecosmart ECO 18 Electric Tankless Water Heater is the best option for residential use. While Rinnai V65IN Tankless Water Heater is the best tankless natural gas water heater. Now, it depends on your decision whether you want a gas tankless water heater or an electric one.

Here are some best tankless water heater of 2021 that you can buy-

  1. Ecosmart ECO 18 Electric Tankless Water Heater (Electric)
  2. Rinnai V65IN Tankless Water Heater (Natural Gas)
  3. Takagi High-Efficiency Natural Gas Tankless Water Heater (Natural Gas)
  4. Rheem RTEX-13 Tankless Water Heater (Electric)
  5. Eccotemp i12-NG Tankless Water Heater (Natual Gas)

Above listed are top-rated tankless water heaters for home/residential use. These are highly efficient and high-performance water heaters. You can check more details below…

10 Best Tankless Water Heater

Below, you can find some top-rated highly efficient tankless water heater for residential use-

1. Ecosmart ECO 18 Electric Tankless Water Heater

Ecosmart ECO 18 Electric Tankless Water Heater


Comes with a compact design, Ecosmart Eco 18 has a digital temperature controller upfront. Based on the season, you can set the range from 80°F to 140°F. The 18kW power at 240 Volt is enough to heat up two sinks and two showers simultaneously in warm climates, and a shower and sink in colder climates.

The innards are completely churned out of Copper and Stainless Steel. Offering to save 12 cubic feet of storage space and 60% of your water heating costs, this heater without tank furnishes with something Ecosmart calls as self-modulating technology.

For your information, it is an exclusive system to calculate the exact amount of energy needed. In this way, the heater doesn’t eat up electricity by a large margin, avoiding the heart attack you may have on seeing the bill.

Why you should buy this?

  • Digital temperature control.
  • 60% of savings on energy consumption for heating water.
  • Self-modulating technology.
  • Lifetime warranty.
  • Easily replaceable parts.


2. Rinnai V65IN Tankless Water Heater

Rinnai V65IN Tankless Water Heater


Are you looking for a gas water heater lacking a tank? Then, you should definitely have a glimpse of Rinnai V65IN. Owing to the absence of the battery, it needs electricity for ignition. Based on the groundwater temperature, this product has the capability to offer up to 6.5 gallons per minute water flow rate.

You know the amount is so high that some else washing their hands or doing laundry in the next room doesn’t affect your soothing hot shower. Apart from the scaled-down energy consumption, Rinnai V65IN emits CO2 at an insignificant rate.

Are you ready to hear something impressive? Well, you get WiFi capability. Yeah, you heard it right! Control-R 2.0 mobile app allows you to set timers and schedules. Furthermore, you can remotely enable the vacation mode.

Why you should buy this?

  • Ability to connect up to four fixtures.
  • Capable of WiFi connection.
  • 5 GPM water flow rate.
  • Residential factory warranty up to 120 months (heat exchanger).
  • ThermaCirc360 technology for recirculation.


3. Takagi High-Efficiency Tankless Water Heater

Takagi High Efficiency Tankless Water Heater


Here comes yet another gas-powered heater. Weighing only 59 pounds with handy dimensions (11.2 x 17.8 x 24.9 inches), it won’t create mayhem in your house even when you want to shift its position. Manufactured solely for indoor use, this heater does feature 10 GPM flow rate.

In the summer season, Takagai’s energy-efficient heater can supply water to three bathrooms whereas, in winter, it will go all the way up to four. The design might not be the most captivating one. Still, it comes on par with the other two offerings listed here, in terms of features.

If you happen to be a spec sheet obsessor, you should know the temperature range lies between 100-185 degrees Celsius. One of the downsides is the lack of modern features like WiFi capability.

Why you should buy this?

  • Compact build.
  • Energy star certification.
  • Computerized safety features.
  • Ultra-low NOx Emissions.
  • No pilot light.


4. Rheem RTEX-13 Tankless Water Heater

Rheem RTEX-13 Tankless Water Heater


Have you ever wished for accurate thermal control for your water heater so that you can increase the warmness even by one degree?  Rheem RTEX-13 residential tankless heater has an external adjustable digital thermostatic control with an LED display. Using the included NPT adapters and compression water connections, the installation is not going to bother you.

If you are looking for a cheap tankless water heater, this should be your pick. It’s compact and features a clean design profile. However, you shouldn’t expect a high water flow rate at a sub $250 price bracket (maximum 3.17 GPM).

Under the hood, there are two durable heating elements made out of Copper. Despite being one of the cheapest options available, RTEX-13 doesn’t waste electricity as it comes equipped with self-modulating power control.

Why you should buy this?

  • Adjustable digital thermostatic control
  • LED display
  • Self-modulating power controller
  • 8% energy efficient
  • Simple installation


5. Eccotemp i12-NG Tankless Water Heater

Eccotemp i12-NG Tankless Water Heater


Are you a minimalist who aspires to have a monochromatic heater? You don’t have to look elsewhere, but here. On the store, there are two variants to choose from; liquid propane and natural gas. What we are referring to is the latter.

Upfront, on the bottom, you can locate a controlling panel with an LED display. The panel includes options to turn on/off, lock, increase, and decrease the temperature. Given it’s tested up to 5500 ft. elevation, height is not going to make this run amok

Akin to all the other products mentioned here,  Eccotemp i12-NG also has a wall-mounted design. Inside the package, you get a horizontal vent kit and installation hardware barring the heater itself.

Why you should buy this?

  • Sleek design.
  • No pilot light needed.
  • LED screen surrounding the controls.
  • Field-tested to 5500 ft. Elevation.
  • Automatic temperature controls available.


6. GASLAND BE158B Tankless Water Heater

GASLAND BE158B Tankless Water Heater


Not everybody can shell out more than a hundred bucks for the sake of a water heater, especially when living alone far from home. That’s when you have look at budget offerings. Here we present before you Gasland BE158B, a heater without a bulky tank that doesn’t rob your bank account.

It comes with anti-freezing technology to avoid freezing of residual water in cold areas. Furthermore, you get overheating protection to keep the heater child-friendly. The manufacturers have intricately designed the water exchanger and main burner with advanced combustion technology to save energy.

What we love about this heater is its local professional customer care team. They are only a call away to solve your service-related problems. With that being said, don’t expect an impressive water flow rate.

Why you should buy this?

  • Fits your budget.
  • Excellent customer service.
  • Lightweight design.
  • Anti-freezing technology.
  • Overheating protection.


7. Camplux TE27 Electric Tankless Water Heater

Camplux TE27 Electric Tankless Water Heater


How awesome it is to have a separate remote controller for your water heater! If that’s your priority, Camplux TE27 is not going to disappoint you. Sporting a clean design, this also has an LED screen with capacitive controls.

The overheat protection turns itself on when the temperature goes beyond 153°F, but even so, it’s easy for you to draw out water between 86°F and 125°F. The NSF certification ensures the manufacturing process meets the standards for safety, sustainability, quality, or performance.

The intelligent power utilization of the heater doesn’t allow electricity to go wasted. And, its smart control can remember your favorite temperature so that you won’t have to set the same over and over again.

Why you should buy this?

  • No pre-heating needed.
  • Smart control to remember your temperature.
  • Over-heat protection.
  • Convertible LED display.
  • Separate remote controller.


8. Noritz NRC66DVNG Tankless Water Heater

Noritz NRC66DVNG Tankless Water Heater


Do you want a water heater without a tank that has a high flow rate? Nortiz NRC66DVNG offers a 6.6 GPM water flow rate. That means you won’t have to impatiently wait for a bucket of warm water.

Owing to less nitrogen oxide emission rates, we can say it is eco-friendly to a great extent. The package gets shipped with multiple terminations and adapters, using which you can go for a wide array of venting options.

The built-in controller helps you set the temperature to your choice. A drawback is you have to buy a valve kit separately to successfully install this heater.

Why you should buy this?

  • Low nitrogen oxide emission.
  • Adapters for a wide array of venting options.
  • Advanced heat exchanger design.
  • 6 GPM water flow rate.
  • High efficiency.


9. American Standard TCWH180S Tankless Water Heater

American Standard TCWH180S Tankless Water Heater (1)


In terms of design, this heater has nothing extravagant to offer. The clean front-side features an LED display apart from the branding. Maintaining a 96-percent efficiency rating, it doesn’t let electricity flow in vain.

The 304 Grade stainless steel used for manufacturing the primary and secondary heat exchangers ensure the longevity of the whole product. Besides, the combustion system is compatible with both natural gas and liquid propane.

If you are ready to spend a thousand bucks in exchange for the maximum water flow rate, you shouldn’t think twice. Just buy this tankless heater.

Why you should buy this?

  • 96% efficiency rating.
  • Heat exchangers made out of 304 Grade stainless steel.
  • Ultra-low NOx emission.
  • 11 GPM water flow rate.
  • 12 year limited heat exchanger warranty.


10. Stiebel Eltron Tankless Heater

Stiebel Eltron Tankless Heater


The best thing you get with this model is the availability of two dozen choices. Although it has a wall-mounted design, no venting is required. So, that brings up the convenience. A digital display with control options is present to help you recognize the temperature

Stiebel Eltron totally works in silence and keeps the warmness consistent with advanced flow control. Just like #7 in this list, this one also can remember your favorite temperature through preset memory buttons.

It can effortlessly draw out water between 86°F and 140°F. In order to activate the heater, you need at least 0.77 GPM flow.

Why you should buy this?

  • Silent operation.
  • Digital display.
  • 7 Years leakage and 3 years part complete warranty.
  • Copper sheathed heating element.
  • Temperature presets.



It’s your turn now! You have got ten best tankless water heaters with completely different price tags. Which one did you choose? If you can’t spend more than $100, GASLAND BE158B should be your pick. But you will be missing out on multitudes of features.

Don’t mind spending a bit more and get a lifetime warranty? Well, gear up for Ecosmart Eco 18. Did you want a surge water flow rate? Why don’t you stumble upon Takagi or Rinnai V65IN? Similarly, we have got everything to match your preferences here. It’s shopping time!!

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