EcoSmart ECO27 240V 27 kW Electric Tankless Water Heater
EcoSmart ECO27 240V 27 kW Electric Tankless Water Heater
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EcoSmart ECO27 240V 27 kW Electric Tankless Water Heater

4.1 stars out of 59 reviews
(4.1)|
59 ratings

Key item features

  • Self-Modulating Technology: Patented self-modulating technology adjusts energy usage based on hot water demand.
  • Endless Hot Water: Provides continuous hot water on demand, ensuring you never run out.
  • Precise Temperature Control: Digital temperature control allows setting in 1-degree increments for optimal comfort.
  • Easy Installation: Features an automatically resettable thermostat and quick connections for simplified installation.
  • Climate Adaptability: Configured for climates with incoming water temperatures as low as 37°F, heating nearly 3 GPM.
  • High Capacity: Ideal for homes with large tubs and high water usage, especially in Northern U.S. and Canada.
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Current price is $515.00
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EcoSmart ECO27 240V 27 kW Electric Tankless Water Heater
EcoSmart ECO27 240V 27 kW Electric Tankless Water Heater
current price $515.00
EcoSmart ECO27 240V 27 kW Electric Tankless Water Heater
4.1 out of 5 Stars. 59 reviews
EcoSmart Water Heaters 240 Volts 18Kw Water Heater for Home, 2.5 gpm Capacity
EcoSmart Water Heaters 240 Volts 18Kw Water Heater for Home, 2.5 gpm Capacity
current price $409.00
EcoSmart Water Heaters 240 Volts 18Kw Water Heater for Home, 2.5 gpm Capacity
Comparison Chart:
Water heater typeTankless Water HeatersEcoSmart ECO27 240V 27 kW Electric Tankless Water HeaterTankless Water HeatersEcoSmart Water Heaters 240 Volts 18Kw Water Heater for Home, 2.5 gpm Capacity
Fuel typeElectricEcoSmart ECO27 240V 27 kW Electric Tankless Water HeaterElectricEcoSmart Water Heaters 240 Volts 18Kw Water Heater for Home, 2.5 gpm Capacity
FeaturesWall-MountableEcoSmart ECO27 240V 27 kW Electric Tankless Water HeaterHeavy DutyEcoSmart Water Heaters 240 Volts 18Kw Water Heater for Home, 2.5 gpm Capacity
Rec locationIndoorEcoSmart ECO27 240V 27 kW Electric Tankless Water Heater-EcoSmart Water Heaters 240 Volts 18Kw Water Heater for Home, 2.5 gpm Capacity
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Customer ratings & reviews

4.1 out of 5 stars
stars59 ratings41 reviews
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Reviews summary

Pros
  • : Similar to other retailers'.
  • : Can support simultaneous use of multiple showers and appliances.
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Showing 1-3 of 41 reviews

Aug 28, 2025
anonymous
Walmart Associate
Item details
Size: ECO27
5 out of 5 stars review

Verified Purchase

EcoSmart Eco27 heats water quickly

Bought this tankless water heater as a replacement for another one I had installed in 2017 that started leaking around the solder joints and quit heating the water. Walmart's price was better than other stores. Although the price was about double from 2017. Installed the EcoSmart Eco27 the same day as received and have hot water again. Water heats up quickly and it's great to not have to take cold showers anymore.

Incentivized Review
Helpful?28RO2Z44C7XF37466890
Aug 22, 2016
TheBoop
Top Reviewer
5 out of 5 stars review

Verified Purchase

EcoSmart 27 Tankless Water Heater

I did extensive research about tankless water heaters and EcoSmart had the best reviews and a lifetime warranty so I had the EcoSmart 27 installed last month. A few places had it for a couple dollars less yet they all charge shipping fees that make Walmart's price unbeatable! We feel more relaxed to know the big tank of hot water is no longer in the house yet it is only a month that we have the EcoSmart installed so it's too soon to know all the benefits and any downfalls. So far it's everything we expected and we're very pleased with the choice. It took a professional a few hours to install the unit with mo problem what so ever. There's a large dial that makes it very easy to adjust the water temperature, hot water reaches the faucets in about half the time it used to take and we have yet to run out. The unit looks just as it does in this picture and is the size described so it's small enough to fit in a closet yet the design is attractive so it looks fine on a wall that is visible. The EcoSmart was only in use two weeks when the electric meter was read so it is too soon to calculate any savings it might have on the electric bill. The bill was lower than it was the same time last year and this year we had the central air conditioner running constantly so there is no major increase. The lifetime warranty requires the unit be installed by a professional and it uses three 30 amp double breakers to run. ( It is NOT recommended yet many reviews were written by people who chose to void the warranty and install the EcoSmart themselves because it's easy to install and parts are inexpensive and also easy to install.) If your electric service has enough available breakers then the installation costs would be about the same as a tanked water heater. If your electric service needs to be upgraded then it will be a more costly investment yet you will not have replacement expenses that most water heater tanks have every few years. Water heater tanks never lasted us long enough to be out of warranty and though the cost of the heater was prorated, the cost of installation steadily increased. The main reason we opted to switch to the EcoSmart tankless water heater was the extensive and expensive water damage caused by leaky water heaters tanks. The EcoSmart tankless water heater is on the wall in clear view so if there is ever a leak it should be easily seen and heard before it can cause any real damage. The water shut off is right under the unit. We are looking forward to many years of hot water when we need it, lower electric bills because we no longer heat water we don't need and no more costly repairs of water damage caused by a leaky or burst water heater tank.

Helpful?28RO2Z44C7XF37466890
Oct 29, 2025
Carmen
Item details
Size: ECO27
5 out of 5 stars review

Verified Purchase

Excellent choice

I was not sure if this was the correct purchase for our household, but it has proven to be one of our best decisions. Temperature of hot water is consistent and everyone enjoys a nice hot shower.

Incentivized Review
Helpful?28RO2Z44C7XF37466890