EcoSmart ECO 27 Tankless Water Heater, Electric, 27-kW - Quantity 1, 17 x 17 x 3.5

EcoSmart ECO 27 Electric Tankless Water Heater

The EcoSmart ECO 27 is one of the industry’s best-selling whole home tankless water heaters. Because it is a whole home model, it can be installed anywhere in a home and still provide service to the entire residence. There are many good reasons why the ECO 27 holds this top spot. Utilizing EcoSmart’s patented Smart Technology, this model conserves an impressive amount of energy while still providing adequate amounts of hot water for medium to large size residences, even during the harsh months of winter.

The EcoSmart brand has developed a reputation for creating durable, reliable products that outlast traditional water heaters with tanks. Their compact designs minimize the amount of space required to install a water heater, plus they are aesthetically pleasing to the eye. When properly installed and cared for, any homeowner can rely upon the ECO 27 to provide an endless supply of hot water to their home for years to come.

Read on to find out more about why the EcoSmart ECO 27 stands out from among its competition!

Key Features

  • EcoSmart offers a lifetime warranty on this water heater’s parts.
  • The unit has a 99.8% energy efficiency rating.
  • Digital temperature controls allow complete control of the hot water in one degree increments.
  • This model is designed to provide endless hot water to larger households.
  • All of its components are made from either stainless steel or copper to ensure their longevity and durability.


  • This model can reduce a home’s energy consumption by up to 50%.
  • Designed for cold climates, the ECO 27 can produce 3 gallons of hot water a minute.
  • The hot water temperature controls allow the temperature to be set between 80 and 140 degrees Fahrenheit.


  • Its overall performance is affected by the temperature of the incoming water.
  • Should a homeowner choose to install this tankless water heater themselves, EcoSmart will not honor the lifetime warranty on components.

Product Review

Overall, the EcoSmart ECO 27 Electric Tankless Water Heater has enjoyed favorable reviews from buyers.

In most locations, the ECO 27 will provide an adequate amount of hot water on demand. However, its performance is affected by the temperature of the incoming water. If a home’s supply of incoming water is less than 37 degrees Farenheit that it will affect its output ability; however, even at such a cold temperature, this water heater can still put out 3 gallons of hot water per minute. EcoSmart includes a helpful reference chart that lists the temperatures of inlet water in different areas of the country, so you will know what to expect from your ECO 27. Water output can be adjusted by tweaking the hot water temperature, which can be raised or lowered in one degree increments.

The ECO 27 is significantly more compact than the average traditional hot water heater. The downside to installing it is that it may require a complete rework of your plumbing because its outlet and water inlet are located on the unit’s underside, rather than the top. Moreover, it requires 112.5 amp (although 200 amp is recommended) and 240V electrical service.

In addition to its customizable controls and ability to produce hot water on demand, one of the biggest selling points of the ECO 27 is its energy savings. Although this water heater is not Energy Star certified, it does boast an impressive 99.8% energy efficiency rating. In most instances, it will reduce a home’s energy costs by 50%. For a few homeowners, the savings have been so significant that the water heater has paid for its initial cost within a matter of a few months.

As mentioned, EcoSmart offers a lifetime warranty on this model, but that comes with a few catches. First and foremost, the warranty covers only the cost of parts, not labor. Secondly, in order for the warranty to be valid, EcoSmart requires that the ECO 27 be installed by a licensed plumbing professional. Many reviews for this product are from buyers who have successfully installed the unit themselves without any issues, but by doing so, they have voided the lifetime warranty. You must carefully weigh the pros and cons of it before deciding if this is a task you want to tackle yourself.


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Thank You For Reading

The EcoSmart ECO 27 Electric Tankless Water Heater is one of the best value tankless water heaters on the market today. It has the capacity to serve a larger single family home. Even in colder climates, it can still manage the demands for hot water from multiple sources. With an excellent warranty from the manufacturer and solid user reviews, this model is a whole house hot water solution that will allow you save money and space, while still having your hot water needs met.

We aim to assist you in making a purchasing decision, but did you know we can help connect you with top plumbers nearby as well? Get a free quote on your water heater installation today.