EcoSmart ECO 36
#1 in ElectricFull review
For a large home with 300 A service that wants all electric hot water. The lifetime warranty and low price per kilowatt make it a strong value if a pro installs it.
Amazon $699$699
5 EcoSmart tankless water heaters ranked. Each one is scored and ranked against every brand in its fuel, so "#3 mid-size" means third of all mid-size tankless water heaters here, not third among EcoSmart's own.
EcoSmart makes 5 current tankless water heaters: 5 electric. Prices run from $219 for the EcoSmart ECO 8 to $699 for the EcoSmart ECO 36. Its best-rated model: the EcoSmart ECO 36 (#1 of 20 electric, rated 4.3).
Prices were last checked October 31, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
EcoSmart tankless water heaters 5
- EcoSmart ECO 36#1 electricFull review
For a large home with 300 A service that wants all electric hot water. The lifetime warranty and low price per kilowatt make it a strong value if a pro installs it.
Amazon $699$69936 kW8.8 GPM0.94 - EcoSmart ECO 11#5 electricFull review
For a single shower or a pair of sinks in a warm climate, with a lifetime warranty if a pro installs it.
Amazon $244.78$244.7813 kW3.2 GPM0.92 - EcoSmart ECOS 27#7 electricFull review
A low cost whole home heater for a two bathroom house in a warm climate. The short warranty is the tradeoff for the price.
Amazon $549$54927 kW6.6 GPM0.94 - EcoSmart ECO 8#8 electricFull review
For a faucet far from the main water heater. A lifetime warranty at a low price makes it a safe point of use pick if you hire the install out.
Amazon $219$2198 kW2 GPM0.96 - EcoSmart ECOS 18#14 electricFull review
For a small home or apartment in a warm climate that wants whole house hot water on two breakers. Amazon stock was low when checked.
Amazon $449$44918 kW4.4 GPM0.96
