EcoSmart ECO 27 Review


Ecosmart ECO 27 is the best available electric tankless heater in the market today that is equipped with self-modulating technology. With a size as compact as 17x17x3.5inches you surely can secure at least 12cubic feet of storage space. The features of this unit are as follows: • Domestic users can benefit from a life time warranty on this unit • Reduces up to 60% of your normal water heating costs through its advanced, self-modulating technology • This ECOSMART tankless water heater never runs out of hot water • Contains digital temperature control system offering 1-degree increment This unit can easily supply high demand of hot water because capacity wise this is the largest model in the market. This smart self-modulating tankless unit is ideal for extremely dry and cold regions because it can heat water efficiently when outside temperature is as low as 37degrees F. You can easily use it on your roman-style or Jacuzzi tubs and kitchen areas because it is a multi-purpose unit.

The Pros & Cons of the EcoSmart ECO 27


  • Supplies up to 3gallons of hot water per minute in extremely cold weather and 6gallons per minute on regular days
  • Efficient in all sorts of weather
  • Energy efficient because it contains highly advanced self-modulating system, which means it adjusts electricity requirement according to the demand and flow of water
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    Can perform the job of two heaters
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    Users can enjoy full control over hot water temperature through its digital temperature control that offers 1degree increments
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    Suitable for small or large families
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    Digital display makes temperature setting easier
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    Sleek and attractive design


  • nitially the unit may not supply hot water as per the temperature but gradually water supply stabilizes
  • Extra wiring and additional components are required for installing the unit
  • To ensure smooth functioning you may need to upgrade it with support systems and pole breakers

Installation and Specifications

This 27KW/240V unit has three separate 9KW heaters operating sequentially and as per user demand. Each unit requires a separate 40amps/240v circuit and 8-gauge wire. Installing this heater is exceptionally simple and easy. You can mount it anywhere provided that the previous plumbing connections are with copper pipe else you will have to modify them. The product comes with a comprehensive step-by-step guide for installing it personally. However, you can seek professional help if you are not familiar with electrical wiring and installations.


Assembled Depth17"
Assembled Height18"
Assembled Width4"
Product Depth17"
Product Height18"
Product Width4"
Water Connection Size3/4 In. NPT
Amperage (amps)112.5
Electric Product TypeCommercial & Residential
Finish FamilyWhite
Flow Rate @ 35 F Rise (gallons/min)5.25 gal (US)/min
Flow Rate @ 45 F Rise (gallons/min)4.08 gal
Fuel TypeElectric
Maximum Temperature (F)140
Minimum Activation Rate (gpm)0.25
Minimum Temperature (F)80
Product Weight (lb.)14 lb
Residential/Commercial/industrial UseResidential, commercial or industrial
ModelEcosmart ECO 27
Water Connection LocationBottom
Water Heater FeaturesWall Mountable
Wattage (watts)27000

Common Problems

One problem that usually occurs is prompted by the 3 copper pipes that serve as heat exchangers. These pose some restriction in water flow. Some users face the issue of dribbling water but this is a problem caused by uncleansed pipes. When you clean the pipes, water will stop dribbling. However, this is one of the best and most energy efficient models currently available especially for domestic use. If you can ignore the high installation cost due to requirement of extra components then this unit is ideal for personal usage.


The ECO 27 is one of the best models you can get for residential use where hot water consumption is high. However, keep in mind that this is not an out of the box product and you will have to spend some money on additional components required for installation. It may also need pole breakers and other such support systems to function smoothly. If you don’t mind the extra installation costs, then this is definitely the heater with the highest features in technology.

You can buy the EcoSmart ECO 27 on Amazon.

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