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Boiler Upgrade Scheme support
Efficient Home Heating with Air Source Heat Pumps
The Boiler Upgrade Scheme pays £7,500 towards a heat pump, rising to £9,000 if your home runs on oil or LPG and has no mains gas connection. There’s no income test, and it comes off your price before you pay. If you qualify for a benefits-based grant instead, your heat pump could be fully funded.
- Gas Safe registered
- MCS certified
- TrustMark approved
- PAS 2030 retrofit certified
- FCA-regulated finance available
Free, no-obligation quotes. We reply within 1 working hour.
Up to £9,000
BUS grant support available
Getting air source heat pumps with Gap Project
Ready for a more sustainable home? We make upgrading to an air source heat pump a stress-free experience.
Pick your model
Choose a high-quality, energy-efficient system that suits your home, comfort needs and budget.
Schedule your install
Select a convenient date and our professional engineers will manage the installation.
Relax in comfort
We’ll install and commission your heat pump so your home is ready for efficient heating.
What is an air source heat pump?
Air source heat pumps provide a sustainable way to heat your property regardless of the weather. The system uses electricity to extract ambient heat from outside air into a refrigerant.
By compressing this liquid, the system intensifies the heat before distributing it throughout your home using underfloor heating or radiators.
The Benefits of Installation
Heat pumps transfer around 300% more energy into the home than they use to operate, making them a highly efficient alternative to traditional mains gas or oil systems.
How to Secure Your BUS Scheme Grant
The Boiler Upgrade Scheme helps homeowners in England and Wales switch to low-carbon heating, and we make the application process effortless.
1
Get a quote for your air source heat pump system
2
Our team applies for the government grant on your behalf
3
Once approved, up to £9,000 is subtracted directly from your final installation bill
Grant value set by the government's Boiler Upgrade Scheme. Source: gov.uk/apply-boiler-upgrade-scheme. Checked 18 August 2026. Eligibility criteria apply and grant levels can change.
How the System Works in Your Home
A complete air source heat pump installation connects outdoor heat collection with your internal heating and hot water system.
The Outdoor Unit
A compact box installed outside that extracts ambient heat from the air.
The Heating System
Warm water flows through radiators or underfloor pipes, releases heat, then returns to be reheated.
The Water Tank
Stores your hot water supply so it is ready when needed, often in a garage or utility cupboard.
Advantages of an Air Source Heat Pump
Efficient, quiet and lower-carbon heating designed for modern homes.
Provides both heating and cooling for your home
Helps lower your overall carbon emissions
More energy-efficient than a traditional gas boiler
Operates quietly, reducing noise disruption
Professional advice from survey to install
Gap Project helps you understand suitability, grant support and installation requirements before recommending the right system for your home.
Speak to an ExpertHow much does the grant take off the price?
The Boiler Upgrade Scheme (BUS) pays £7,500 towards an air source or ground source heat pump. Until March 2027 you can get a further £1,500, taking it to £9,000, if your property is heated by oil or LPG and has no mains gas connection. There’s no income test: anyone replacing a fossil fuel heating system in England or Wales can apply. We submit the paperwork on your behalf and take the grant straight off your price, so you never see a ‘before grant’ figure.
If you’re on a qualifying benefit and your home has an EPC rating of D or below, you may also be able to get a heat pump fully funded through ECO4. We check both routes for you.
A heat pump works hardest in a well-insulated home. If your loft hasn’t been checked, ask us about that first.
Indicative Price Guide
Guide prices only, based on typical UK installations. Your final price is confirmed after a free survey and depends on property type, system size and site conditions.
| Option | Typical cost | What affects it |
|---|---|---|
| Small property (up to 8kW) | £8,000 to £11,000 | Well insulated 2 to 3 bedroom homes. |
| Average property (8 to 12kW) | £11,000 to £14,000 | Includes cylinder and standard radiator changes. |
| Larger property (12kW and above) | from £14,000 | Bigger heat demand or extensive pipework upgrades. |
Frequently Asked Questions
Do heat pumps work in cold UK winters?
Yes. Air source heat pumps extract heat from outside air well below freezing and are designed to meet UK winter design temperatures.
Will I need new radiators?
Sometimes. Heat pumps run at lower flow temperatures, so some radiators may need upsizing. The survey confirms exactly which rooms are affected.
How much space does a heat pump need?
The outdoor unit needs clear air around it, usually on an external wall or ground base, plus space indoors for a hot water cylinder.
Is a heat pump cheaper to run than a gas boiler?
Running cost depends on insulation, system design and tariff. A well designed system with a good efficiency rating can be comparable or cheaper, especially on a heat pump tariff.
How noisy are they?
Modern units are comparable to a fridge at a few metres. Siting and mounting are chosen during the survey to keep noise low for you and your neighbours.
How long does installation take?
A typical domestic installation takes two to four days depending on pipework, cylinder position and any radiator changes.
Why choose Gap Project
- Free home surveyNo obligation, no pressure
- Next-day installBook by 3pm, we start tomorrow
- Nationwide coverageEngineers across the UK
- We apply for your grantBoiler Upgrade Scheme handled
- Up to 10-Year warrantyManufacturer-backed cover
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Speak to Gap Project about air source heat pumps and Boiler Upgrade Scheme support for your property.