Air source heat pump cost in the South West
An air source heat pump in the South West typically costs £14,500 installed — 10% above the UK average of £13,000. After VAT and the Boiler Upgrade Scheme you would pay £7,000. Most jobs here fall between £8,800 and £20,000.
- Typical installed £14,500
- vs UK average +10%
- After grant £7,000
- Trade day rate £190–£255
What you would actually pay
3-bed semi · the South West- Typical installed cost Air source heat pump, supplied and fitted
- £14,500
- VAT at 0% Energy-saving materials, until 31 March 2027
- £0
- Boiler Upgrade Scheme Your installer applies on your behalf and the grant comes off the quote.
- −£7,500
- Net cost to you
- £7,000
This 0% rate ends on 31 March 2027. The date that counts is when the work is completed, not when you sign. Check on GOV.UK (opens in a new tab).
If you borrowed £7,000.00 over 36 months at 0.0%, it would cost £194.44 a month — £7,000.00 in total, of which £0.00 is interest. The last payment would be £194.60.
Illustration only — not a quote, not an offer of credit, and not financial advice. Rates depend on your circumstances and creditworthiness.
What affects air source heat pump costs in the South West
Tradespeople in the South West typically charge £190 to £255 a day, which is 10% above the UK average and the single biggest reason prices here differ from the national figure.
The South West has one of the highest proportions of solid-wall housing in England. Stone is the norm across Devon and Cornwall, cob survives in quantity in Devon, and Bath and the Cotswolds are built in limestone that carries its own conservation rules. Bristol adds a large Victorian terraced belt. Cavity insulation is simply not an option on much of this stock, and lime rather than cement is often the correct material.
Mild and wet, with the wettest ground on Dartmoor and Exmoor and rainfall well above the English average through the west of the region. The long coastline means salt exposure is a routine consideration rather than an edge case: fixings, flashings and renders all weather faster within a mile or so of the sea, and specifications should account for it.
Planning and building regulations in the South West
Dartmoor, Exmoor and a string of National Landscapes cover much of the region, and Bath is a UNESCO World Heritage Site with correspondingly strict controls. Cornwall and Devon have high concentrations of listed buildings, where like-for-like repair in traditional materials is usually the only route.
Grants and schemes in the South West
Boiler Upgrade Scheme — Your installer applies on your behalf and the grant comes off the quote. Full details and eligibility .
You may also be eligible for
- Energy Company Obligation (ECO4) — Means-tested and funded by energy suppliers rather than government, so it is not deducted from the prices on this page.
Eligibility and scheme details change. Always check the official page before you commit to the work.
How the South West compares
| Region | Typical installed | vs UK average |
|---|---|---|
| London | £16,500 | +25% |
| South East | £15,000 | +17% |
| South West · you are here | £14,500 | +10% |
| East of England | £14,000 | +6% |
| East Midlands | £13,000 | UK average |
| West Midlands | £13,500 | +4% |
| Yorkshire and the Humber | £13,000 | UK average |
| North West | £12,500 | −2% |
| North East | £12,500 | −5% |
| Scotland | £13,500 | +2% |
| Wales | £12,000 | −6% |
| Northern Ireland | £11,500 | −12% |
Regional figures scale our UK guide price by local labour rates. They are indicative, not quotations.