Pros
- Compact 11.5 x 8 x 3.75 inch size frees up valuable space
- High 99.8% thermal efficiency reduces energy waste significantly
- Reliable endless hot water supply with consistent temperature
- Easy digital LED display for simple temperature adjustments
- Versatile for single or dual low-flow uses depending on climate
Cons
- Requires dedicated 60 AMP double-pole 240V circuit and 6 AWG wiring
- Sizing critical; best for warmer incoming water or point-of-use only
- Professional electrical installation recommended due to high amperage
The EcoSmart ECO 11 is a 13KW tankless electric water heater designed for point-of-use applications like a single bathroom shower, small sink, or office breakroom. It excels in climates with incoming water at 67°F or higher, delivering 1.3 to 3.1 gallons per minute, enough for one shower in colder areas or two in warmer ones. Homeowners seeking endless hot water without the bulk of traditional tanks will find this model perfect for whole-home point-of-use needs.
Standout features include patented self-modulating technology that adjusts energy use in real-time for 99% efficiency, ensuring water heats precisely within 1 degree of your set temperature from 80-140°F. In real-world use, it provides consistent performance without temperature drops during use, saving energy by only activating when water flows. The LED display makes adjustments straightforward, and its flow monitoring maintains optimal output.
Build quality is solid with a sleek white plastic exterior, weighing just 6.5 pounds for easy wall mounting. At 11.5 x 8 x 3.75 inches, it is 90% smaller than tank models, using 1/2-inch compression fittings for simple plumbing. Durability is backed by a lifetime warranty on key components, though labor is not covered.
Drawbacks include the need for specific electrical setup: a 60 AMP double-pole breaker at 240V with 6 AWG wire, which may require upgrades. It is not suited for high-demand whole-home use in cold climates without verifying sizing. Overall, the EcoSmart ECO 11 earns high marks for efficiency and convenience, making it a smart upgrade for targeted hot water needs.
Power: 13KW, 240V, 54A Amperage Draw
Flow Rate: 1.3-3.1 GPM (depending on inlet temperature)
Temperature Range: 80-140°F
Dimensions: 11.5" H x 8" W x 3.75" D; Weight: 6.5 lbs
Connections: 1/2" Compression Fittings
Efficiency: 99.8%; Wall Mount
Warranty: Lifetime on electronics, exchanger, and element (parts only)
Ideal for incoming water 67°F+: One shower (1.5 GPM) + sink. In warmer climates (higher inlet temps), supports two showers. Always check local inlet temperature and flow needs. Compare models: ECO 8 (8KW, lower flow), ECO 18 (18KW, more capacity). Requires 1 x 60 AMP DP breaker, 6 AWG wire.