Appliances Radar is reader-supported. When you buy through links on our site, we may earn an affiliate commission. Learn more

10 Best Rated Electric Tankless Water Heater in 2024 - The Top Reviews

Amanda Davis
  Mar 28, 2024 5:36 PM

The best tankless water heaters can save you a lot of money in the long run. Not only do they take up less space, but they also heat water on demand, which means you won't be wasting energy heating water that sits in a tank.

In this blog post, we'll take a look at some of the best-rated electric tankless water heaters on the market and provide our top review for each one. So, if you're in the market for a new tankless water heater, keep reading!


Top rated

Best for homes or businesses: ‎‎Stiebel Eltron 230628

The Stiebel Eltron 230628 240V, 12 kW DHC-E12 Single/Multi-Point-of-Use Tankless Electric Water Heater is perfect for homes or businesses that need a reliable source of hot water but don't want to deal with the hassle and expense of a traditional tank water heater.

The Stiebel Eltron 230628 is easy to use, simply set the knob on the front cover to your desired water temperature (between 86DegreeF and 125DegreeF) and enjoy hot water whenever you need it. Plus, this unit comes with a three year parts warranty, so you can be confident in its performance. And because it's compact and attractively designed, the Stiebel Eltron 230628 will fit seamlessly into your space.

Best for small spaces: ‎‎Stiebel Eltron 239223

The Stiebel Eltron 239223 Tankless Water Heater is a sleek and efficient way to have continuous hot water on demand. This heater requires hard-wired 240 or 208-volt electric service, with a maximum draw of 28,800 watts at 240 volts or 21,600 watts at 208 volts.

It also requires 3 separate dedicated 40 amp breakers with 8 gauge copper wiring and a minimum of 200 amp total service to the residence. This product is perfect for any home as it saves space and doesn't require venting.

Best easy to use: ‎‎EcoSmart ECO 27

The ECO 27 tankless water heater is continuously monitored for water temperature and flow rate, ensuring efficient and consistent performance within 1 degree of your chosen temperature. Plus, it's 90% smaller than traditional tank heaters, so it can be installed on a wall or at your point of use.

And because it only heats water when you need it, the EcoSmart ECO 27 is 99% thermal energy efficient, potentially saving you up to 50% on your water heating costs according to the Department of Energy. 

Best‎ for easy operation:​​​​​​​ Rheem ‎RTEX-24

The Rheem RTEX-24 24kW 240V Electric Tankless Water Heater is designed to provide on-demand, consistent, and continuous hot water, and features an ON/OFF dial control with an adjustable digital temperature display for easy operation.

The self-modulating power control ensures energy efficiency, while the bottom 3/4" NPT water connections make installation a breeze. With a flow rate of up to 5.9 GPM, this model is perfect for small to medium households. 

Best easy to install: Rheem RTEX-08

The Rheem 8kW 240V Tankless Electric Water Heater features an on/off dial control with an adjustable digital temperature display, making it easy to get the perfect temperature every time.

The self-modulating power control ensures that you're never wasting energy, and the 8kW model has a flow rate of up to 1.95 GPM. With side 1/2" NPT water connections, this unit is easy to install and provides continuous hot water on demand.

Read more


Compare Products

Showing  1 - 10  in  10 results
1
  • SCORE
    9.4
    AR Score

    AR Score is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the Appliances Radar tool. This score doesn't impact from any manufacturer or sales agent websites. Learn more

  • Brand
    Stiebel Eltron
2
  • SCORE
    9.2
    AR Score

    AR Score is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the Appliances Radar tool. This score doesn't impact from any manufacturer or sales agent websites. Learn more

  • Brand
    Stiebel Eltron
3
  • SCORE
    8.8
    AR Score

    AR Score is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the Appliances Radar tool. This score doesn't impact from any manufacturer or sales agent websites. Learn more

  • Brand
    Rheem
4
  • SCORE
    8.8
    AR Score

    AR Score is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the Appliances Radar tool. This score doesn't impact from any manufacturer or sales agent websites. Learn more

  • Brand
    Rheem
5
  • SCORE
    8.8
    AR Score

    AR Score is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the Appliances Radar tool. This score doesn't impact from any manufacturer or sales agent websites. Learn more

  • Brand
    EcoSmart
6
  • SCORE
    8.8
    AR Score

    AR Score is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the Appliances Radar tool. This score doesn't impact from any manufacturer or sales agent websites. Learn more

  • Brand
    Rheem
7
  • SCORE
    8.8
    AR Score

    AR Score is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the Appliances Radar tool. This score doesn't impact from any manufacturer or sales agent websites. Learn more

  • Brand
    EcoSmart
8
  • SCORE
    8.6
    AR Score

    AR Score is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the Appliances Radar tool. This score doesn't impact from any manufacturer or sales agent websites. Learn more

  • Brand
    ECOTOUCH
9
  • SCORE
    8.6
    AR Score

    AR Score is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the Appliances Radar tool. This score doesn't impact from any manufacturer or sales agent websites. Learn more

  • Brand
    Eemax
10
  • SCORE
    8.6
    AR Score

    AR Score is a scoring system developed by our experts. The score is from 0 to 10 based on the data collected by the Appliances Radar tool. This score doesn't impact from any manufacturer or sales agent websites. Learn more

  • Brand
    Rheem

Last update on 2024-03-28 / Affiliate links / Images, Product Titles, and Product Highlights from Amazon Product Advertising API

4.6
5 ratings

What to consider

What to consider to buy Electric Tankless Water Heater 

Are you in the market for a new water heater? If so, you may be considering an electric tankless water heater. These heaters are becoming more and more popular, and for good reason – they offer a number of benefits over traditional tank-style water heaters.

However, before you make the switch, there are a few things you should consider. In this blog post, we will discuss 8 things to think about before you buy an electric tankless water heater!

1. Cost

– Electric tankless water heaters can be more expensive upfront than traditional tank-style water heaters. Consider how much you’re willing to spend and research the costs of different models.

2. Space

– Since electric tankless water heaters are much smaller than traditional tanks, they take up way less space in your home or office. Consider the amount of space you have available and ensure that your tankless water heater will fit.

3. Usage

– Electric tankless water heaters are more energy-efficient than traditional tanks, but they can be overwhelmed if too many people are using hot water at once. Think about how much hot water your family or office uses and make sure that the tankless water heater you choose can handle it.

4. Installation

– Tankless water heaters typically require professional installation and may need additional wiring to ensure they are properly connected. Make sure you factor in these costs when budgeting for your new system.

5. Maintenance

– Electric tankless water heaters require less maintenance than traditional tank-style water heaters, but they still need regular maintenance to perform at their best. Make sure you factor in the cost of regular maintenance when budgeting for your new system.

6. Warranty

– Electric tankless water heaters typically come with a warranty that covers defects and malfunctions. Make sure you understand what the warranty covers and the length of the coverage.

7. Quality

– Not all electric tankless water heaters are created equal, so make sure you research different models to figure out which one is right for your needs. Look for reviews from other customers and read up on the features of each heater to make sure it’s a good fit for you.

8. Capacity

– Electric tankless water heaters come in a variety of sizes, so make sure you get one that has enough capacity to meet the needs of your family or office.

Rheem RTEX-24


Final words

We hope our top 10 best-rated electric tankless water heaters list has given you a few options to choose from for your next purchase. We know that with all the choices on the market, it can be tough to pick the right one for your home - but we’re confident that any of these would make an excellent addition. Thanks for reading and happy shopping!