50 Gallon, Hybrid Electric Heat Pump, Energy Star Qualified, Dual Standard 4500W, 240V Elements, UEF: 3.42, Absorbs Heat From The Ambient Air & Converts To Hot Water Using HVAC Compressor Technology, 4 Operating Modes, Heat Pump Only, Standard Electric Only, Hybrid & Vacation Mode Maintains 60 Degrees Temperature Up To 99 Days, Side Connection Water Inlet & Outlet, Heat Pump On Top Of Tank, Easy To Use Electronic Interface Controlling Set Point, 2" Non CFC Foam Insulation, Aluminum Anode Rod, First Hour Rating 95 Gallons Recovery At A 90 Degree Rise Gallons/Hour 21, 10 Year Tank & Parts Warranty, 1 Year Labor, 240 Vac Single Phase 30A Power Supply, Factory Installed CSA Certified ASME Rated T & P, Requires Provision For Condensate Draining, Dimensions: 63"H x 22"D.