Heat Pump Installation UK — Cost, Timelines & How to Book
What it really costs to install an air source heat pump in 2026, what the job involves, and how to shortlist an MCS-certified installer near you.
1. What does heat pump installation cost?
The headline price hides the real one. Almost every quote you see is misleading until you split the unit from the installation, the cylinder and the radiator upgrades. Here’s the 2026 picture for a typical 3-bed property.
| Job element | Typical 2026 cost |
|---|---|
| Air source heat pump unit | £4,000 – £8,000 |
| Installation labour (2–5 days) | £2,500 – £4,500 |
| Hot water cylinder | £1,000 – £2,500 |
| Radiator upgrades (if needed) | £800 – £3,000 |
| Total before grant | £7,000 – £12,000 |
| After £7,500 BUS grant | £3,500 – £8,500 |
Figures are 2026 guide ranges for a fully-installed 3-bed air source system, before any interest-free finance. Confirm with a written site-specific quote.
2. Common problems & who shouldn’t instal
Installations go wrong when the property isn’t suited or the quote hides surprises. Be aware that:
- ❌ Old, draughty homes often need radiator and insulation upgrades first, adding £2,000–£4,000 to the job.
- ❌ Hidden extras for the cylinder are the single most common quote surprise — confirm they’re itemised.
- ❌ An invalid EPC blocks the grant. If your EPC lists outstanding loft or cavity-wall insulation recommendations, address them before the installer can claim.
- ❌ Low-flow heat emitters (old radiators) force the pump to work harder, cutting efficiency and inflating running costs.
- ✅ Who it’s ideal for: reasonably insulated homes, floor- or good-sized wall-mounted radiators, and homeowners planning to stay put long enough to see the payback (7–10 years).
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3. Versus: air source vs ground source installation
| Fits | Air source (ASHP) | Ground source (GSHP) |
|---|---|---|
| Installed cost | £7,000 – £12,000 | £14,000 – £24,000 |
| Time to instal | 2–5 days | 1–2 weeks + drilling/trenching |
| Efficiency (SCOP) | 3.0–4.5 | 3.5–5.0 |
| Space needed | Outdoor unit, ~1m from wall | Large garden for trench or borehole |
| Planning permission | Usually Permitted Development | Almost always required |
| Verdict | Best for most UK homes | Best for large gardens, very low running costs |
4. Who each option is for
Choose air source if…
You have a standard UK home with a small garden or no garden, want a faster, cheaper install, and qualify for the £7,500 BUS grant. This is the cost-effective choice for 90% of households.
Choose ground source if…
You have significant land, are building or fully renovating, and want the lowest possible running costs over 20+ years despite the much higher upfront investment and longer install.
5. Verdict
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Heat pump installation FAQs
Heat pump installation frequently asked questions
- How much does a heat pump installation cost in the UK?
- For a typical 3-bed home, a fully-installed air source heat pump costs £7,000–£12,000 before the £7,500 Boiler Upgrade Scheme grant. After the grant comes off the quote, most homeowners pay £3,500–£8,500. Installation labour alone is usually £2,500–£4,500 on top of a £4,000–£8,000 unit.
- How do I find a heat pump installer near me?
- Search the MCS certified installer directory for companies covering your postcode, then cross-check reviews on Google and Trustpilot. Always get at least 3 written quotes so you can compare how each installer prices the unit, hot water cylinder, radiator upgrades and labour.
- What is covered in a heat pump installation quote?
- A complete quote should include the heat pump unit, installation labour, the hot water cylinder (£1,000–£2,500), any radiator upgrades (£800–£3,000), the electrical connection, and commissioning. Hidden extras for the cylinder and radiators are the most common surprise on a quote — confirm these are itemised before you agree.
- How long does a heat pump installation take?
- A standard air source heat pump install takes 2–5 days, including the outdoor unit, refrigerant pipework, electrical connection, hot water cylinder and commissioning. Ground source installations take longer — typically 1–2 weeks because of the trenching or drilling.
- Do I need planning permission for a heat pump?
- Most air source heat pumps fall under Permitted Development, so no planning permission is needed — but there are size, siting and noise rules. Listed buildings and conservation areas do need consent. A ground source system almost always requires planning permission.
- Can I get the £7,500 grant?
- The Boiler Upgrade Scheme (BUS) pays £7,500 off an air source heat pump for every eligible homeowner in England and Wales. You must own the property, have a valid EPC with no outstanding loft or cavity-wall insulation recommendations, and use an MCS-certified installer who claims the grant on your behalf.
- Boiler Upgrade Scheme — GOV.UK / Energy Security & Net Zero — https://www.gov.uk/apply-boiler-upgrade-scheme
- MCS Installer Directory & Certification — https://mcscertified.com/
Cost ranges are 2026 guide figures from MCS-certified installer pricing and the Boiler Upgrade Scheme grant. Always confirm the final figure with a written, site-specific quote.