aroTHERM pure is Vaillant's split heat pump with R32 gas, an environmentally friendly refrigerant with a low environmental impact and a GWP of 675. Designed for new buildings, it offers outputs from 4 to 10 kW and a compact, lightweight outdoor unit that can also be installed on the roof thanks to pipe lengths of up to 40 meters and a maximum height difference of 30 meters. Combined with the uniTOWER pure indoor unit, with its modern design and small dimensions of 60x60 cm, it guarantees up to 250 liters of domestic hot water at 40°C. An 8-liter DHW expansion tank and the VR940f gateway for connectivity can be added.