Marey ECO240 23.5 kW Electric Tankless Water Heater
Marey ECO240 23.5 kW Electric Tankless Water Heater Review
The Marey ECO240 is a 23.5 kW whole-house electric tankless water heater. Sized between the ECO180 and ECO270 in Marey's whole-house line. Suitable for 2-bath cold-climate homes or 2-3 bath warm-climate homes.
Specs: 23.5 kW, two 50-amp double-pole breakers, 98A continuous draw at 240V. Capacity: 2.8 GPM at a 60°F rise or 4.2 GPM at a 40°F rise. Copper heat exchanger.
Marey's value positioning: about $600 unit versus $1,100-$1,400 for established competitors (Rheem RTEX-24, Stiebel Eltron Tempra 24). Build trade-offs reflect lower price — copper heat exchanger (more frequent descaling in hard water vs stainless), 10-year heat-exchanger warranty (vs lifetime for EcoSmart), 1-year electronics warranty.
About $600 unit, $1,800 installed. Right buyer: budget-conscious 2-bath whole-house electric tankless install in soft-water regions. For hard-water regions or long-term primary residences, EcoSmart ECO 27 with lifetime warranty is the better economic choice.
- Tankless electric — zero standby loss; no pilot, no venting, minimal footprint
- UEF 0.99 — top-tier efficiency; qualifies for Inflation Reduction Act §25C residential credit
- 10-year warranty — solid above-average coverage for this class
- Flow rate drops in cold climates where inlet water is below 45°F — size up if ground water is cold