Air source pumps are an alternative way to heat your home – replacing your gas or oil based system, for example. They work like a ‘ fridge in reverse’, extracting free heat from the outside air, raising the temperature with a compressor and using that to heat water for a water tank and central heating system. Air source heat pumps can still extract heat when air temperatures are as low as -25°C. The pump runs on electricity. Every 1kW of electricity produces 3kW of heat output which makes them a highly energy efficient way to heat your home
Potential annual savings if you’re installing a standard air source heat pump in an average sized, four-bedroom detached home will be between 2,150 kg to 10,500 kg of CO2 a year/. £315 to £1300 a year, depending on the age and fuel type of your system (energy saving trust figures), and your lifestyle.