Our coverage in Northamptonshire runs from Northampton, Corby, Kettering and Wellingborough and the villages around them. The approach is the same everywhere: survey, design, a written quote, then installation by installers working under our contract.
Towns we cover in Northamptonshire
Heat pump services in Northamptonshire
Grants and rules for heat pumps in England
Homes in Northamptonshire can use the Boiler Upgrade Scheme, which takes £7,500 off the cost of an air source heat pump when it replaces fossil-fuel or electric heating. Replacing oil or LPG heating qualifies for £9,000 for installations from 21 July 2026 to 31 March 2027, and air-to-air systems for £2,500. The MCS-certified installer named in your quote applies for the grant and deducts it from the price.
There is no VAT on installing a heat pump anywhere in the UK until 31 March 2027. In England most houses can have an air source heat pump under permitted development, provided the unit meets the MCS noise and siting standards; the old 1 m boundary limit was removed on 29 May 2025. We flag listed buildings, flats and sensitive conservation-area positions at survey.
Guide prices in Northamptonshire
| Home | Typical size | Installed guide price | After £7,500 grant |
|---|---|---|---|
| 1–2 bedroom flat or small terrace | 4–5 kW | £9,500–£12,500 | £2,000–£5,000 |
| 2–3 bedroom terrace or semi | 5–7 kW | £10,500–£13,500 | £3,000–£6,000 |
| 3 bedroom semi or small detached | 6–9 kW | £12,000–£15,500 | £4,500–£8,000 |
| 4 bedroom detached | 8–12 kW | £14,000–£18,000 | £6,500–£10,500 |
| 5+ bedroom or larger older house | 11–16 kW | £16,500–£22,500 | £9,000–£15,000 |
Installed, inc VAT: unit, cylinder, controls, minor pipework and commissioning.
Questions
Do air source heat pumps work in cold weather?
Yes, air source heat pumps are designed to keep working well below freezing and can heat your home through a UK winter. The system is sized for a cold design day in your area, so it is designed to cope on the coldest days. Efficiency falls as the outside temperature drops, and the unit periodically defrosts its outdoor coil, when a little vapour is normal. See how air source heat pumps work.
Does an air source heat pump need servicing?
Yes, annual servicing is recommended for an air source heat pump and is often a condition of the manufacturer warranty. A service checks the outdoor unit and coil, filters, system pressure, expansion vessel, anti-freeze protection, controls and performance, and cleans what needs it. Servicing is a paid visit, with a guide price of £120–£250, including VAT. Refrigerant work on split systems must be done by an F-gas certified engineer. See heat pump servicing.
How long does an air source heat pump last?
An air source heat pump typically lasts 15–20 years, depending on the model, how it is used and how well it is maintained. Annual servicing helps it run efficiently and is often a condition of the manufacturer warranty. Parts such as pumps, sensors and fans can be replaced during its life. When an outdoor unit reaches the end of its life, a like-for-like replacement is a guide price of £6,000–£9,500, installed and including VAT.
How do I pay for my heat pump installation?
How and when you pay is set out in your written quote, so you know the full price and any payment stages before you agree to anything. Nothing is ordered until you accept the quote. Where a grant applies, such as the Boiler Upgrade Scheme in England and Wales, it is deducted from the price shown. If you have questions about payment, ask at the survey and we will explain how it works for your job.