Air Source Heat Pumps (ASHP)

Air source heat pump

What is an Air Source Heat Pump?

An air source heat pump consists of two parts, an outdoor unit and an indoor unit. It functions in the opposite way to a fridge. They can either work as a heating only device or a heating & cooling device.

How does an Air Source Heat Pump work?

The outdoor unit of the air source heat pump will take energy (heat) out of the ambient air by pulling the air through a fan. This outdoor air heats up a refrigerant to the point that, because of its extremely low boiling temperature, it boils and turns into gas. Once it has boiled, the refrigerant is pushed through a compressor, which heats it further to temperatures of around 60-70°C. This is then used to heat your hot water, radiators and underfloor heating.