Air source heat pump
Jul 31, 2015

Is an air source heat pump suitable for my home?

Air source heat pump – is it right for you?

Firstly lets just explain what these are! Air source heat pumps (ASHPs) absorb heat from the outside air. This heat can then be used to heat radiators, underfloor heating systems, or warm air convectors and hot water in your home.

Different from a ground source heat pump, an air source heat pump extracts heat from the outside air in the same way that a fridge extracts heat from its inside.

It can get heat from the air even when the temperature is as low as -15° C.

There are a few key questions to consider when you are looking at this type of heating:

  • Do you have somewhere to put it?
    You’ll need a place outside your house where an air source heat pump unit can be fitted to a wall or placed on the ground. It will need plenty of space around it to get a good flow of air.
  • Is your home well insulated?
    Since an air source heat pump produces less heat than a traditional boiler, it’s essential that your home is insulated and draught proofed well for the heating system to be effective.
  • What fuel will you be replacing?
    The system will pay for itself much more quickly if it’s replacing an electricity, Liquid Petroleum Gas (LPG) or coal heating system than a gas or oil one.
  • What type of heating system do you want?
    Air source heat pumps can be used to heat a radiator system but are better suited for powering underfloor heating systems.
  • Is the system intended for a new development?
    Combining the installation with other building work can reduce the cost of installing the system.

Costs and savings – air source heat pump

Costs for installing a typical system suitable for a detached home range from about £5,000 to £9,000 including installation.

Running costs for space heating and hot water for washing are likely to be around £790 per year. This will vary depending on a number of factors – including the size of your home and how well insulated it is.

Savings can be considerable – up to 5 tonnes of CO2 and £700 per year for a system that replaces an electric heating system.


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