EcoSmart ECO Review ~ The Best Electric Tankless Waterheater

The Ecosmart Eco At A Glance

Top Perk > Live Warranty

EcoSmart ECO 27 Electric Tankless Water Heater, 27 KW at 240 Volts, 112.5 Amps with Patented Self Modulating Technology

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When it comes to choosing the best water heater for any application, a simple need may not always require a simple unit. The EcoSmart ECO tankless water heater is your top choice if you have a “simple” need of a reliable heating system that will constantly deliver hot water on demand to single point areas like your sink, cabin or a room in your home. With this unit you can expect considerable reduction in your energy bills, as well as your water bills; thanks to its digital control and self-modulating technology. Apart from its great price, the EcoSmart ECO also comes with other features that it a good catch. Of course, the most important one is its lifetime warranty, which obviously separates it from the rest of the field.

  • 8.4/10
    Efficiency - 8.4/10
  • 8.6/10
    Ease of Use - 8.6/10
  • 8.8/10
    Value - 8.8/10
  • 8.6/10
    Features - 8.6/10

EcoSmart ECO

  • Cost: $$$
  • Model Number: ECO27
  • Weight: 16.8 pounds
  • Size: 17 x 17 x 3.5 inches
  • Voltage: 240 V
  • Water Flow Rate: 6 gallon per minute (GPM)
  • Temperature Range: 80F-140F
  • Usage: Indoor
  • Fuel Type: Natural Gas
  • Similar model: ECO24
  • Warranty: Lifetime Warranty on electronics, exchanger and element. Warranty only covers cost of heater; does not cover labour or any incidental damages



Using a traditional hot water tank is not only wasteful, it can leave you feeling frustrated at times. Imagine yourself in dire need of hot water, then walking up to your sink only to discover that you have to wait a little while for hot water from the tank outside to get to you. Beside this, such a set up can even skyrocket your bill because tanked water heaters generally use power throughout the day. The cost of installation and maintenance can also be disturbing. Unfortunately, there are many households still making use of such systems; whether it’s because they don’t know better or they just find it hard to let go of old technologies, we don’t know yet.

A better and more effective solution that has been developed for providing hot water in residential buildings and offices environments is the tankless water heater. These devices allow you to get hot water when you need it and will help you save a great deal of money on energy bills. They don’t take up as much as traditional heaters and only require little maintenance since they come without storage tanks.

So expectedly, electric tankless heaters don’t hold water; instead they run on your home’s electricity to provide you and your family with hot water on demand.

One of the tankless water heaters that has attracted of interest from homeowners due to its high efficiency and superior performance is the ECO Smart Tankless Water Heater. And it’s no surprise this unit is highly rated considering the fact that it’s a product of an industry benchmark, Rinnai.

EcoSmart is a highly trusted brand in electric tankless water heaters, and for good reason. They have one of the most efficient units on the market and have been a best seller 3 years in a row on major online retailers, while consistently maintaining a very high positive review score.

If you have a simple need to place a water heater under your sink, perhaps for a cabin or a new powder room added to your home, then the EcoSMART ECO electric tankless water heater is the right unit for you.

With this unit you can expect considerable reduction in your energy bills, as well as your water bills; thanks to its digital control and self-modulating technology.

The ECO 27 is capable of heating nearly 3 gallons per minute at a low temperature of 37F. It can handle up to two showers running at the same time and never run out of hot water. For homes in the southern United States, the ECO 27 is perfect for a high demand of hot water between multiple applications. It can handle up to 6 gallons per minute, which means you can run four showers and a sink simultaneously and never run out of hot water. A digital temperature control allows you to set your temperature in increments of 1 degree, so you can set the temperature anywhere from 80°F – 140°F.

We believe the ECO 27 is one of the best electric tankless water heaters in the market right not, which is why we have it in our list of the best tankless heaters currently available.