An air source heat pump extracts heat from the outside air and uses electricity to convert it into usable heat for the home. They can operate efficiently even at low temperatures.
How They Work
A heat pump system works like a fridge in reverse – [explain]
It typically includes:
- an external unit that sits outside your property, with a fan and compressor
- a refrigerant circuit that absorbs heat from the air
- a heat exchanger that transfers this heat into your radiators or hot water
For every 1kW of electricity used, a heat pump can produce 2–4kW of heat, making it potentially up to three times more efficient than a gas boiler.
Suitability
- Works best in well-insulated homes
- May require larger radiators due to lower flow temperatures
- Often operates continuously at a steady temperature, rather than switching on and off
Switching to a heat pump can significantly cut carbon emissions, especially when powered by renewable electricity or paired with solar PV.
