Heat Pump Services
Air-to-Air Heat Pump Installation
A lower cost route to heat pump heating. Air-to-air systems warm your rooms directly, cool them in summer, and now qualify for a £2,500 grant. Ideal for homes that do not need a new hot water system.
MCS-Certified Installers
Grant eligible installs
£7,500 BUS Grant
Applied to your quote
0% VAT
On qualifying work
Local Engineers
Northamptonshire based
Who are air-to-air heat pumps right for?
Air-to-air heat pumps suit a specific set of Northamptonshire homes very well. They make most sense when you do not need to replace your hot water system, or where running a full wet central heating circuit would be expensive or disruptive.
- Homes currently heated by electric storage heaters, where there is no existing wet system.
- Flats and apartments where a hot water cylinder and radiator circuit is impractical.
- Extensions, garden rooms and home offices that need independent heating and cooling.
- Households that want summer cooling as well as winter heating from one system.
- Properties where the budget rules out a full air-to-water installation.
How the system works
An outdoor unit extracts heat from the air and pumps refrigerant to one or more indoor units mounted on walls or ceilings. Each indoor unit has its own controls, so you heat only the rooms you are using. A single outdoor unit can serve several indoor units in a multi-split configuration, which is how a whole house is covered. In summer the cycle reverses to provide cooling.
Costs and the £2,500 grant
Air-to-air systems are considerably cheaper than air-to-water because there is no cylinder, no radiator upgrades and far less pipework.
| System | Before grant | After £2,500 grant |
|---|---|---|
| Single room (one indoor unit) | £3,000 to £4,500 | £500 to £2,000 |
| Two to three rooms | £5,000 to £7,500 | £2,500 to £5,000 |
| Whole home (multi-split) | £8,000 to £10,000+ | £5,500 to £7,500+ |
We confirm grant eligibility during your survey. See the grants and funding page for the rules.
Air-to-air or air-to-water?
If you want one system to handle both heating and hot water and to attract the full £7,500 grant, an air-to-water heat pump is usually the better fit. If your home has no wet heating system, or you value summer cooling and a lower upfront cost, air-to-air can be the smarter choice. We will assess your property honestly and recommend whichever genuinely suits you.
Frequently asked questions
What is the difference between air-to-air and air-to-water heat pumps?
An air-to-water heat pump heats water for your radiators, underfloor heating and hot water cylinder. An air-to-air heat pump heats the air directly and blows warm air into rooms through indoor units, the same hardware that provides cooling in summer. Air-to-air is cheaper to install and excellent for space heating, but it does not produce hot water, so you keep a separate water heating method.
Can I get a grant for an air-to-air heat pump?
Yes. From April 2026 air-to-air heat pumps became separately eligible for a £2,500 Boiler Upgrade Scheme grant. This is lower than the £7,500 for air-to-water systems, but air-to-air installs cost far less, so the grant covers a large share of the price for many homes.
How much does an air-to-air heat pump cost?
A single-room air-to-air system starts from around £3,000, while a multi-room system covering a whole house typically runs £6,000 to £10,000 before the £2,500 grant. Cost depends on the number of indoor units and the outdoor unit capacity.
Does an air-to-air heat pump provide cooling?
Yes. The same indoor units that heat your rooms in winter provide cooling in summer, which is a useful advantage over air-to-water systems and traditional boilers. This makes air-to-air popular for homes that want year-round comfort.
Related pages
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Book a no-obligation site survey. We handle the grant paperwork, system design and installation from start to finish.