Exhaust Air Heat Pumps
Ventilation, which means totally hygienic inside air, is a basic requirement for living in a healthy house
For an exhaust air heat pump to work, the necessary ventilation system has to be constructed at the same time as the house itself. It is neither cost effective nor practical to install an exhaust air system after the house is built. An exhaust air heat pump is the perfect choice for small houses and apartments. An exhaust air heat pump is the perfect choice for small houses and apartments that are built to current Building Regulations or above.
An exhaust air heat pump can cover the heating requirements of a well insulated house in all but the coldest conditions. When working efficiently, it can reduce your homes energy consumption for heating by up to 50% when compared to conventional heating systems. The NIBE exhaust air heat pump also works well in conjunction with either radiators and / or underfloor heating systems to give you a comfortable indoor temperature, hot water, low running costs, a long service life and minimal maintenance.
How does an exhaust air heat pump work?
A NIBE exhaust air heat pump extracts air via the ventilation ducts positioned in the wet rooms of the house such as bathrooms, kitchens (but not cooker hoods) and utility rooms. Ventilation takes place in two different ways: by exhaust air only or by a combination of exhaust air and heated intake air. In the former, the air in the house is conveyed from rooms with outdoor air diffusers to rooms with exhaust air diffusers. The latter is designed for houses with heating systems where some of the heat supply is provided by a heated supply air.
The air in the house is conveyed from rooms with supply air diffusers to rooms with exhaust air diffusers. On its way out of the house, heat is extracted from the old air and transferred into the heat pump’s refrigerant circuit. The cooled air is then discharged. Meanwhile, the vapour compression cycle of the heat pump raises the temperature of the refrigerant and transfers the extracted heat into a water based system that can either warm the domestic hot water or heat the building or both.