99% efficient, Mounts in any direction under sink, Solid copper heat exchanger, Saves water, saves energy, No T&P necessary (CHECK LOCAL CODES), Eliminates long pipe runs, 1/2"" NPT connections, 478234 operates on 220V at 84% capacity and on 208V at 84% capacity and on 208V at 75% capacity, Ships via UPS, Amps: 50, Volts: 240V, SKU: HMREX1143