Costs of installing a typical system range from about £7,000 to £13,000. Running costs for a year, where all hot water and space heating can be provided by the system are likely to be around £650 per year, but will depend on a number of factors – including the size of your home and how well insulated it is.
Savings can be considerable – up to 540kg of CO2 and £160 if you’re replacing an oil-fired central heating system.
To reduce your home’s CO2 emissions further, consider installing solar electricity or some other form of renewable electricity generating system to power the compressor and pump.
Fuel Displaced £ Saving per year CO2 saving per year
Gas £190 No saving
Electricity £840 6 tonnes
Oil £160 540kg
Solid £600 5.6 tonnes
Savings above assume ground source heat pump installed in a detached property which provides 100% of space heating and up to 50% of domestic hot water, the additional 50% is met through an electric heater.