Heat Pumps in Cardiff
Independently writtenCardiff's mild South Wales climate makes it an excellent location for air source heat pumps. The £7,500 Boiler Upgrade Scheme grant applies in Wales as well as England.
Cardiff at a glance
5.1°C
Average winter temperature
Source: Met Office
2180
Heating degree days
Source: Regional data
£897/yr
Est. heat pump running cost
Source: Ofgem rates Q1 2026
£90/yr
Est. saving vs gas
Source: Calculated
Housing in Cardiff
Victorian and Edwardian terraces, 1930s semis, and newer estates. Cardiff has a mix of well-insulated modern homes and older properties that may need upgrades.
Heat pump costs in Cardiff
An air source heat pump in Cardiff typically costs £8,000–£15,000 before the £7,500 BUS grant. After the grant, most Cardiff homeowners pay £500–£7,500.
Running costs depend on your property size and insulation. For a typical 3-bed semi in Cardiff, expect to pay around £897 per year to run a heat pump — compared to £987 for gas heating. That's a saving of approximately £90 per year.
Cardiff's mild climate means lower heating demand and higher heat pump efficiency — you'll get more heat per unit of electricity here than in colder regions.
Thinking about a heat pump for your home?
Tell us about your home and request a heat pump quote. It takes about two minutes.
Planning a heat pump in Cardiff? Check your costs and suitability firstNo obligation. We are not installers: we pass your request to an MCS-certified installer covering your area.