Heat Pump Installation in Cardiff

Cardiff has a population of ~362,000 across approximately ~150,000 households, making it one of the larger urban areas in Wales. With average property values at £240,000 and a council net-zero target of 2030, the economics and policy environment both point strongly toward renewable energy adoption.

Heat pump efficiency in Cardiff's climate is well-established. Modern air source heat pumps maintain a Coefficient of Performance (CoP) of 2.5–3.5 even in sub-zero temperatures. At Cardiff's typical winter ground temperatures of 5–8°C, a well-sized heat pump delivers 3–4 units of heat for every unit of electricity consumed — three to four times more efficient than a gas boiler at current prices, and without combustion emissions.

The Boiler Upgrade Scheme (BUS) grant of £7,500 is available for Cardiff properties replacing oil or gas boilers with an air source heat pump. The grant is applied by us directly to your invoice — you pay the net cost, not the gross. With the grant, a typical Cardiff heat pump installation costs £2,000–£8,000 net depending on property size and any radiator upgrades needed.

Welsh Government renewable energy support. The council's net-zero target of 2030 means planning policy in Cardiff is increasingly hostile to new gas connections in extensions and new builds. Heat pumps are the primary technology for decarbonising existing housing stock — and with the BUS grant active and energy prices elevated, 2025–2026 is the optimal window to make the switch.

Pairing a heat pump with solar panels in Cardiff creates a powerful combination. The heat pump uses electricity (not gas) to provide heat, and a solar system generates that electricity from your roof. A well-optimised setup — heat pump running during solar peak hours, hot water cylinder heated mid-afternoon on solar generation — can provide 40–60% of annual heat energy from rooftop solar. Add a battery to store surplus midday generation and the figure rises further.