Heat Pump We supply various types of heat pump and its brands, such as Hoval Hoval Heat Pump A pioneering air/water heat pump in a monoblock design that not only heats and provides domestic hot water, but also cools in the summer. It obtains heat from the ambient air. Hoval Belaria Fit Hoval Thermalia Everest Heat Pump Everest (R410A) Everest (R417A) Everest HT (R134A) Thermaflow Heat Pump THERMAFLOW (R410) AquaHeat Heat Pump AquaHeat (R410A)