EcoSmart ECO Electric Tankless Water Heater Review

Product Name:ECO Electric Tankless Water Heater
Power Source:Electric
Use Type:Indoor
Capacity:3.5 GPM
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The Quick Review

Where natural gas isn’t an option and capacity isn’t a great concern, one of the best electric tankless water heaters available is made by EcoSmart – a company not traditionally associated with water heaters.

Nevertheless, they have released this single model in their product line and it truly delivers for those with modest water heating needs. Perfect for a cottage, cabin or smaller house would save up to 50% on their electricity bill each year by switching a conventional electric tank based water heater to this tankless electric water heater.


This water heater comes in a variety of capacity sizes, depending on the electric service you have in your residence. The lowest model, the ECO 8, can heat 1.5 gallons per minute which is only suitable for a single shower and only incoming water at 67 degrees or above, all the way to the ECO 36, which can heat 3.5 gallons per minute with incoming water at 32 degrees or higher. You will need to know what electrical service you have available and what temperature the incoming water is at the coldest time of the year where you live.


Installation is extremely easy and well documented. While professional installation is highly recommended, it is widely reported by do-it-yourselfers as being quite simple to install and taking less than 2 hours. If you aren’t comfortable installing an electric tankless water heater yourself, please contact a local plumbing professional.


For those with modest means, this product provides the highest possible value, especially if your electric power source is solar, which would make all hot water free for you. While the efficiency doesn’t match that of natural gas, there are no emissions directly from the unit, and can be run off a reliable solar/battery power source.

The Misses

Most tankless water heaters take a while for the water to heat up when you turn on the faucets, and this unit is no exception. It can take up to 20 seconds (in the winter) for the water to heat up, which is slower than conventional electric water tanks.

The capacity, even for the highest models, are modest. 3.5 Gallons per minute is roughly the ability to run two showers at once, but may have difficulty running a shower and a large appliance at once. However, this product’s niche is those looking to conserve electricity, or without access to natural gas, and plays that role perfectly. Still, we’d like to see some innovation in the gallons per minute ability of the ECO line.

Our Recommendation

We recommend this water heater if you have very modest water heating needs with incoming water temperatures of 67 degrees or above (southern united states). Otherwise, we would recommend this electric tankless water heater by Rheem.

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