There are a few things to consider before buying a heat pump, such as:
Air source heat pump costs
Prices start from £5,500 in England and Wales or £3,000 in Scotland (including the government grants).
Upgrading radiators for air source heat pumps
Some heat pump system designs, particularly low-temperature heat pumps, may also require larger radiators to work at their maximum efficiency.
Air source heat pump for underfloor heating
Heat pumps work best when there’s less of a difference between the inside and outside temperatures. Floors cover a much bigger area than radiators, so they don’t need to get as hot to provide the same amount of heat. This makes them a good match for underfloor heating, but it's not essential.
Heat pumps for water heating
Heat pumps can also be a great source of hot water – but the water is likely to be around 50-55 °C with a heat pump, compared to 60-65 °C with a boiler. This means that if you’re running a bath, you’ll need more hot water and less from the cold tap.