How much does it cost to run an air source heat pump?

If the sizing and installation of an air source heat pump is correct, in a well-insulated house, with correctly sized radiators, in most circumstances it will cost the same as it currently does for the gas and electric used to heat a home (the bill will just be all electric). In some circumstances the cost could even be reduced, depending on how it’s used. The best way to use air source heat pumps is to maintain the level of heat, rather than switching it on and off as you would with a boiler. Homeowners would have their heating on for longer periods (but at a lower temperature), adjusting the room temperature by only 1 or 2 degrees. It is important to explain that using an air source heat pump is very different to the way we currently use our gas boiler, but once they have adapted their routine, they can use their air source heat pump very successfully and efficiently.