Ecosmart ECO 27 Review: Best Choice For Whole-House

whole house water heater

The Ecosmart ECO 27 is one of the leading whole-house tankless water heaters in the US. This heater is a real miser when it comes to power usage as a result of its Smart Technology. Even with low power usage, it can provide more than sufficient water volumes for the majority of houses even during the coldest of winters. EcoSmart is, privately owned and uses green energy technology. EcoSmart as an organization is committed to producing and distributing high-quality green energy products which are extremely efficient and economical.

In this review, we will review the factors that make Ecosmart ECO 27 one of the most popularly purchased and highly recommended tankless water heaters currently available in the market. We will also analyze the elements that make this water heater the most energy-efficient, money efficient, and an environment-friendly instantaneous or on-demand water heaters.

Ecosmart ECO 27 Review

Ecosmart ECO 27 Electric Tankless Water Heater Reviews

The Ecosmart ECO 27 is a 99.8% energy-efficient tankless water heater. It has a limited lifetime parts warranty and is backed by experienced customer service personnel.

Main features of the Ecosmart ECO 27

  • Ability to save up to 50% on water heating costs
  • Self-modulating technology, this means that the Ecosmart ECO 27 will adjust the energy used by the heater depending upon the requirement of the hot water.
  • Very stylish and ergonomic design which is highly attractive.
  • Temperature is controlled digitally in 1-degree increments
  • Copper components which are stainless resulting in high durability, greater efficiency, and easy replacement
  • Compact size allowing easy installation and saving on space.

One of the most appealing features of the Ecosmart ECO 27 has to be the self-modulating power control. This activates each of the heating elements as and when the demand increases. So if there is a scenario wherein you are using only one faucet in the bathroom, all three heaters will not be activated. However, if you’re washing a full load of laundry in your washing machine or alternately filling your bathtub, all three heater elements will automatically be activated to bring ensure that the water temperature reaches your setting quickly. This is a great energy saving feature.

Pros & Cons


  • The Ecosmart ECO 27 is very well-built, easy to install and reliable.
  • This water heater is a very good value for the price point. Of particular note is that the small size creates more space after you have the water heater installed.
  • Replacement parts are readily available at local stores all over the USA.
  • One of the main benefits of buying this is the peace of mind you will get considering the lifetime parts warranty and responsive customer service.


  • Users in very cold climates may not be able to achieve the temperature rise claimed by Ecosmart.
  • Computer sensors for the power modulation fail at times; however, Ecosmart has a record of replacing these parts quickly upon being requested.
  • Of particular concern is the fine print which states that the lifetime warranty is valid only upon parts and only if the unit is installed by qualified individuals.
  • To be on the safe side, we would recommend you consider getting the unit installed by a licensed plumber and an electrician.

Check top 4 EcoSmart Tankless Water Heater Reviews now.

Short Frequently Asked Questions

What is the flow rate of the Ecosmart ECO 27?
162 gallons per hour at an inlet water temperature of 37 degrees Fahrenheit and 396 gallons per hour at an inlet water temperature of 77 degrees Fahrenheit.
What are the dimensions of the Ecosmart ECO 27?
18 inches height and a diameter of 14 inches by 17 inches
How heavy is the Ecosmart ECO 27?
The total weight of the unpackaged unit is 13.75 Pounds
What sort of energy savings are obtained by using the Ecosmart ECO 27?
With around a 99.8 percent efficiency rating, the energy savings are very high. It is possible enough to cut energy costs by around 50 percent.
What sort of warranty comes with the Ecosmart ECO 27?
A limited lifetime warranty comes with the product. The warranty covers part and not labor. So in the event of any replacement of parts, you’ll have to pay for labor.


A well-designed unit with reliable performance, the Ecosmart ECO 27 is a fabulously designed unit with a performance that is extremely reliable. It is a true tankless whole-house electric water heater. The Ecosmart ECO 27 can be used to supply hot water for your entire home, it can also be used in a boat, a shop, a cabin or as a water heater anywhere you may need a limitless supply of hot water.

Using the Ecosmart ECO 27 will ensure that not only will you save space and money in the long term, but you and your family will also get all the hot water you need throughout the year.


Weight: 16.8 Pounds

Dimensions: 3.6"x17"x17"

240 volts, 27000 watts

12 Year Heat Exchanger warranty 

Lifetime Warranty on electronics, exchanger and element

Lifetime Warranty on electronics, exchanger and element


Save up to 50% on water heating 

Self-modulating technology

Very stylish and ergonomic design

Digitally controlled Temperature

Stainless Copper components for high durability, greater efficiency & easy replacement

Compact size

Easy Installation

Self-modulating Power Control

Pros and Cons

very well-built

very good value for price 

Low temperature rise claimed by clients in cold Temp.

Replacement parts are readily available

At times Computer sensors for power modulation fail 

Unit installed by a licensed professional 

Responsive customer service.


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