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Air Source Heat Pump (ASHP)
What is it?
A domestic Air Source Heat Pump is a device normally placed outside the property to absorb heat from the outside air and deliver it into your home to provide water for bathing, radiators or underfloor heating systems.
How does it work?
An air source heat pump works like a fridge in reverse. Where a fridge or freezer absorbs the small amount of heat inside it and rejects this at the rear, a heat pump absorbs heat from the outside air and uses it to heat water and provide heating.
Are they environmentally friendly?
Yes. A significant reduction of CO2 would be expected when compared to conventional heating systems. New build installations using ASHPs attain "A" ratings (this the maximum available for heating & hot water systems).
Will it save me money?
Domestic ASHPs cost a little more than a boiler, but the payback period can be as low as 5 years and could save you up to 75% of your running costs depending on the heating system it replaces. With typical efficiency of 4:1 this means that for every unit of energy consumed by the ASHP, 4 useable units of energy are available for heating.
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