Amazon.com: Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray & 3M Aqua-Pure Whole House Scale Inhibition Inline Water System AP430SS, Helps Prevent Scale Build Up On Hot Water Heaters and Boilers :
Amazon.com: Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray & 3M Aqua-Pure Whole House Scale Inhibition Inline Water System AP430SS, Helps Prevent Scale Build Up On Hot Water Heaters and Boilers :