Air Source Heat Pump Technology
An air source heat pump draws in air from outside your property and raises the temperature of that air to release energy which turns into heat. A heat exchanger transfers the energy from the air to a liquid refrigerant, which has a low boiling point which in turn evaporates and passes through a closed system.
Just as in a refrigerator, a compressor, condenser, expansion valve and evaporator are used to change states of the refrigerant between a cold liquid and a hot gas.
Air Source heat pumps are generally installed externally fitted to a wall or placed on a hard surface.
Coefficient of Performance (CoP):
The coefficient of performance or CoP of a heat is a ratio of heating or cooling provided to electrical energy consumed. Generally heat pumps have a CoP of 3-4.
For example 1kWh electrical energy to produce 3 to 4kWh’s of heat = Coefficient of performance (CoP) = 3.0 to 4.0