EcoSmart ECO 27 Tankless Electric Water Heater – 27 kW, 240V, Compact 11 lb

Efficient, compact hot water for colder climates

The EcoSmart ECO 27 is an electric tankless water heater designed to respond to cooler incoming water without the bulk of a storage tank. Its self-modulating technology adjusts energy use in real time, heating only what you need to reach your chosen outlet temperature. This creates a leaner energy profile while delivering hot water on demand for daily routines.

With a slim, 11 lb footprint, the ECO 27 fits into tight spaces and retrofit projects where every inch matters. It’s a practical upgrade for homes with larger hot water needs or multi-use baths, offering a balance between performance and space efficiency.

What it can do for you

• Configured to handle incoming water as low as 37°F, expanding options in colder regions.
• Capable of heating nearly 3 gpm at low inlet temperatures, supporting multiple uses in succession.

Technology, design, and control

• Three 9 kW Emerson heating elements with brass tops help reduce electrolysis, supporting longevity.
• Copper heat exchanger for efficient heat transfer and reliable performance.
• Digital temperature display with 1-degree increments to fine-tune comfort.
• Self-modulating flow sensor adjusts energy use based on demand, minimizing waste.
• Automatic resettable thermostat for simple, safe operation.
• Energy efficiency around 99.8% in typical conditions, reducing standby losses.

Electrical, plumbing, and safety notes

Electrical setup requires 240 V single-phase power, three 40 A double-pole breakers, and three 8 AWG runs. Pipe fittings are 3/4" NPT. The unit can draw up to 112 A under peak load. UL and CSA certified for reliability and safety.

Performance, use cases, and placement

Output ranges from 2.7 to 6.5 gpm depending on inlet temperature, making it suitable for scenarios from a single shower to larger baths in milder conditions. The ECO 27 is well-suited for northern U.S. homes, Canada, and southern regions where hot water demand is high. Its compact design supports installation closer to points of use, potentially reducing wait times for hot water.

Think of this model as a flexible, space-saving option that adapts to colder inputs and varying hot water needs without committing to a traditional tank.