Air Source Heat Pumps

Air Source Heat Pump

Air Source Heat Pump

Air Source Heat Pumps allow you to heat your home using the outside air. Heat pumps absorb heat from the outside air to heat radiators, underfloor heating, warm air convectors and hot water. Unlike gas or oil boilers, heat pumps deliver heat at lower temperatures over much longer periods. This means that during the winter they may need to be left on 24/7 to heat your home efficiently. It also means that radiators should never feel as hot to the touch as they would do when using a gas or oil boiler.


What are the benefits of air source heat pumps?

Air source heat pumps can lower your home's carbon emissions, depending on what fuel you are replacing. They can also lower fuel bills, especially if you are using conventional electric heating. 

Air source heat pumps can be easier to install than a ground source heat pump and are often classed as 'fit and forget' technologies as they need little maintenance. However efficiencies can be lower than ground source heat pumps. 

Costs and Savings

Savings will vary depending on many factors, some are outlined below. Actual savings figures will depend on your exact fuel prices:

  • The heat distribution system: If you have the opportunity, underfloor heating can provide greater efficiencies than radiators because the water doesn't need to be heated to such a high temperature. If underfloor heating isn't possible, then use the largest radiators you can. Your installer should be able to advise on this.
  • Fuel costs: You will still have to pay fuel bills with a heat pump because they are powered by electricity. The saving you achieve can be affected by the price of the fuel you are replacing and the price of the electricity for the heat pump.
  • Efficiency of old and new system: The efficiency of the old heating system will affect how much you spent on heating bills previously. If the old heating system was inefficient heating bills could have been high and the difference between the new running costs and the old running costs will be greater, therefore providing a greater saving.
  • Hot water: If the system is providing hot water as well as space heating: the provision of hot water can lower system efficiencies, therefore making running costs higher.
  • Temperature setting: If you heat your home to much higher temperatures with a new heat pump system than you did with an old heating system then your home will be warmer, but heating bills could be higher than if you continued with the same heating pattern. It's a good idea to set thermostats to around 18 to 21 degrees centigrade.
  • Using the controls: Learn how to control the system so you can get the most out of it. Your installer should explain to you how to control the system so you can use it most effectively

Grants and Discounts

Installing an energy efficient measure in your home may not cost as much as you think. You may be eligible for a grant or discount to cover the costs of your installation. To find the right offer for you search the Energy Saving Trust's Grants and Discounts Database. The tool is easy to use and only takes 5 minutes to complete.

Further Information

To find out if Air Source Heat Pumps are suitable for your home visit the Home Energy Generation Selector Tool.

Alternatively for further information on Ground Source Heat Pumps contact:
Energy Saving Trust Advice Centre: 0800 512 012