Costs, savings and maintenance

The costs for fitting a typical domestic system range from £6,000 to £10,000 including installation. Running costs vary depending the size of your home and how well insulated it is. Currently you can get a one off payment of £850 from the government through the RHPP scheme to contribute to your installation costs.

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Costs & Maintenance

Heat pumps typically come with a 10 year warranty and should be expected to run for at least 20 years. You should check your system every year and arrange to have a professional installer inspect it every 3-5 years.

Heat pumps need electricity to run the fan and pump, but the heat they extract from the air is more than the energy that they use to capture it.

You should leave your heat pump on all the time during the winter as this will make it much more efficient at capturing heat.

Savings

In the right home the savings can be considerable. The Energy Saving Trust estimates that when replacing an existing electric heating system in a 3 bed semi detached home you could save up to £610 per year, even before any contribution from the Renewable Heat Incentive.

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FAQs

How do air source heat pumps work?
A box on the outside of your house called the air handling unit takes in outside air and then transfers the heat energy from the air to a fluid through large heat exchangers . The fluid is then compressed in a heat pump to raise the temperature to a level that means it can be used in your home as heating and hot water.
Where in my house should an air source heat pump be installed?
The bulkiest component of an air source heat pump is the air handling unit, which must be fitted outside. The unit can be fitted on an outside wall, but some designs allow this to be fitted some way away from the home, as far as 20-30 meters. The heat pump needs to be in or on the house and typically this is where the essential components are housed.
Will an air source heat pump provide enough hot water for heating and hot water?
If you do not heat your water beyond 55°C and your system has been correctly scaled and fitted for your needs there is no reason why all your domestic hot water requirements shouldn't be provided by the air source heat pump throughout the year. It should be noted that heat pumps produce water at a lower temperature than boiler systems, meaning that you will need larger radiators or an underfloor heating system or the pump to heat your house effectively.
How much hot water is produced each day by an air source heat pump?
This will depend on the make and model of air source heat pump that you're planning to use, but a well chosen pump should be able to meet all of your heating needs. You should aim to get advice from at least one well accredited installer when choosing a model.
How much do they cost and how much will I save?
Complete our free home Energy Assessment to find out how much a typical air source heat pump would cost for your house, how much it would save you and how long the payback will be.
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