Rheem RETEX-36 36kw Tankless Electric Water Heater. The item "Rheem RETEX-36 36kw Tankless Electric Water Heater Brand new Sealed Package" is in sale since Sunday, November 8, 2020. This item is in the category "Home & Garden\Home Improvement\Heating, Cooling & Air\Water Heaters\Tankless Water Heaters". The seller is "bartibog53" and is located in Dieppe, New Brunswick. This item can be shipped to Canada, United States.