The ideal thermal energy accumulator, Energy-Xchange heat pump boilers come in two models, 80 & 100 liter wall-mounted model and 200 & 300 liter standing model. This 1 phase 230 volt heat pump draws energy from outside or ambient air.
ENERGY-XCHANGE HEAT PUMPBOILERS Have energy label A+, a C.O.P. of 4.32 / 4.45 and the natural refrigerant propane R290. A 2 kW electric element as a backup or additional booster.