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EcoSmart ECO 27 Electric Tankless Water Heater: What to Know
Per EcoSmart's own product page, the ECO 27 uses three 9 kW copper immersion heating elements in a multi-chamber design the company states improves thermal performance, temperature control and recovery speed compared to a single-element design. Self-modulating technology means the unit only draws the power actually needed to reach your set temperature at the current flow rate, rather than running at full power regardless of demand.
EcoSmart states the unit is up to 93% smaller than a standard electric tank water heater, with digital thermostatic controls adjustable in 1-degree increments from 80°F to 140°F — meaningfully more precise temperature control than a typical tank heater's dial. Construction uses a copper heat exchanger, a powder-coated shell over a galvanized steel backplate, and brass NPT fittings, and the company backs the ECO 27 with a lifetime limited warranty.
A real electrical consideration worth understanding before buying: this unit requires a 240-volt, 3-circuit electrical setup drawing up to 200 amps combined (commonly requiring three double-pole 40-amp breakers and 8-gauge wire per the manufacturer's spec), which is a substantial electrical service requirement most homes' panels would need evaluation for before installation — this is not a plug-in appliance.
Key Listed Features
27 kW across three 9kW copper immersion heating elements
Self-modulating technology, up to 0.94 UEF
Digital thermostatic control in 1-degree increments, 80-140°F range
No venting required; lifetime limited warranty
