Heat Pump Running Cost Calculator

A typical air source heat pump costs £500-£900 per year to run, depending on your home size, insulation, and electricity tariff. This compares to £800-£1,400 for a gas boiler. With a smart tariff offering off-peak rates, heat pump costs can drop significantly.

In most cases, yes. Although electricity costs more per kWh than gas, heat pumps are 3-4x more efficient (COP of 3.0-4.0). This means for every 1 kWh of electricity used, you get 3-4 kWh of heat. The net running cost is typically 20-40% less than gas.

The Boiler Upgrade Scheme (BUS) provides a £7,500 grant towards air source heat pump installation. This dramatically reduces the upfront cost and shortens the payback period to typically 5-8 years for a well-insulated home.

Yes, but insulation improvements may be needed first. Older properties with poor insulation have higher heat demand, meaning larger and more expensive systems. The calculator shows this - try changing the insulation level to see the impact. Most installers recommend at least cavity wall and loft insulation before fitting a heat pump.