ECO180 Electric Tankless Hot Water Heater Instant On Demand Whole House 5 GPM by admin on February 11, 2020 Marey ECO180 Tankless Water Heater. 5.0 Gallons Per Minute. Instant On-Demand Hot Water. The ECO line by Marey is designed using SMART Technology. It is the only tankless water heater that does not accumulate sediments, […]