RETE-18 - 18kW 2.73 GPM Tankless Electric Water Heater. Uses energy only when hot water is needed. Compact design allows simple installation almost anywhere. The item "Rheem RETE-18 tankless water heater (refurbished)" is in sale since Tuesday, May 9, 2017. This item is in the category "Home & Garden\Home Improvement\Heating, Cooling & Air\Water Heaters\Tankless Water Heaters".The seller is "ssitec*ca" and is located in St-Antoine-de-Tilly. This item can be shipped to North, South, or Latin America.