In the evaporator (heat exchanger) the energy transferes from the cold medium to the refrigerant. The refrigerant will then evaporate. The refrigerant is transported in the circuit by the compressor to increase the pressure and temperature of the refrigerant. In the condenser (heat exchanger) the refrigerant cools and condense. The energy is then transfered from the refrigerant to the heating system of the house, hot water system or airsystem The expansion valve regulates the mass flow of the refrigerant to maintain the pressure difference between the high pressure and the low pressure side.

Ground Source Heat pumps

Ground source heat pumps using the soil or groundwater as the heat source. Pipes are either laid horizontally or vertically in bore holes to extract energy which is then circulated to the heat pump.

Air Source Heat pumps

You should choose a NIBE air/water heat pump if is not possible to drill in a ground probe or install a surface absorber on the property. This converts the energy of the outside air into heat and creates a comfortable temperature inside the house.

Heat Recovery Exhaust Air Heat pumps

Ventilation, which means totally hygienic inside air, is a basic requirement for living in a healthy house. Controlled domestic ventilation with heat recovery reuses the energy from the exhaust air. Not only that, the additional heat generated internally from lighting, people and domestic appliances is also utilised through heat recovery.