Air source heat pump installers

Air source heat pumps work by extracting heat from the outside air and transferring it into your home through a process called vapour compression. The system compresses refrigerant gas to increase its temperature, then uses a heat exchanger to pass warm air into your home’s heating system or hot water boiler.

Yes, air source heat pumps are one of the most cost-effective and sustainable heating options for UK homes in 2025. They deliver up to 400% efficiency and reduce household emissions by as much as 70%. They can also save homeowners up to £1,500 a year on energy bills when replacing traditional boilers.

The average cost of an air source heat pump installation in the UK is between £7,000 and £15,000, depending on your property size, system capacity, and existing heating setup. Many homeowners can reduce this cost to £4,500–£7,500 with the help of the Boiler Upgrade Scheme (BUS) grant. Bigger properties that need radiator or plumbing upgrades may pay slightly more, but the long-term energy savings often outweigh this upfront cost.

Several factors affect the price of an air source heat pump installation, including:

• Your property size and insulation – If you have a larger or poorly insulated home, you may need a larger system. You may even need to upgrade your radiators so they can distribute heat better.
• Your existing heating system – If you’re switching from a traditional oil or gas boiler, you may need to upgrade your pipework or hot water cylinder to suit low-temperature heating. You may also need new electrical connections or smart controls to optimise your heat pump’s performance.
• Accessibility – If your heat pump can’t be placed directly on the ground (e.g. due to a lack of space), it’s often mounted on a wall, which can require brackets to hold the unit more securely, adding to the cost.
• Grant and finance – If you meet strict qualifying criteria, schemes like ECO4 can reduce the overall cost of your air source heat pump. Flexible finance options also let you spread the cost over time with no initial deposit. Together, these make air source heat pumps more affordable and accessible.

Air source heat pumps produce far fewer carbon emissions than traditional gas or oil boilers. By using electricity to transfer heat instead of burning fuel, they can reduce your home’s carbon footprint by up to 70%. They also improve your Energy Performance Certificate (EPC) rating, helping your property meet UK energy standards.

Both systems use renewable energy to heat your home, but air source heat pumps are generally more affordable to easier to install. They typically cost £7,000 to £15,000, while ground source systems can exceed £20,000 due to the need for groundworks. Air source units take just 2–3 days to fit and work in most UK climates.

All Grant Store installations are carried out by MCS-certified engineers and include full product warranties from leading manufacturers. We also offer aftercare support, annual servicing, and performance checks to keep your air source heat pump running well.

Air source heat pump installations need very little maintenance. We recommend a professional service once a year to check filters, electrical connections, and the refrigerant levels. You should also keep the outdoor unit clear of anything that might block the airflow (e.g. leaves, grass cuttings, snow).

An air source heat pump typically lasts 15 to 20 years with regular servicing. Homes with good insulation also help the system run more efficiently, reducing strain and potentially helping it last even longer.