Air source heat pumps extract heat from the outside air even when the temperature is as low as -15° C!

There are two variations of this method. An air-to-water system distributes heat via your wet central heating system whereas an air-to-air system produces warm air which is circulated by fans to heat your home (though is unlikely to provide hot water). Just like ground source heat pumps, this method also works much more efficiently at a lower temperature than a standard boiler system would, again making it more suitable for under-floor heating systems or larger radiators, which give out heat at lower temperatures over longer periods of time.

If you are considering investing in air source heat pumps, you will need to ensure you have a place outside your home where a unit can be fitted wither to a wall or placed on the ground. It will need plenty of space around it to get a good flow of air, and a sunny sport is ideal. Again, air source heat pumps work best when producing heat at a lower temperature than traditional boilers, so it’s essential that your home is properly insulated and draught-proofed for the heating system to be effective.