Heat pump costs in the UK range from £8,000 to £20,000 installed. Here’s a full breakdown — supply, labour, system changes — plus how the Boiler Upgrade Scheme cuts the bill.
Heat pump costs in the UK typically run between £8,000 and £20,000 installed, depending on the type of system, the size of your home, and how much groundwork is needed. That’s a wide range, so this guide breaks it down piece by piece — unit price, labour, any system upgrades, and how the £7,500 Boiler Upgrade Scheme grant fits into the picture. By the end you’ll have a realistic number to plan around, not a vague ballpark.
Air source vs ground source: the cost difference
The first decision that shapes your budget is which type of heat pump you’re installing.
| Type | Typical installed cost (2026) | BUS grant available? | Net cost after grant |
|---|---|---|---|
| Air source heat pump (ASHP) | £8,000 – £15,000 | Yes — £7,500 | £500 – £7,500 |
| Ground source heat pump (GSHP) | £15,000 – £35,000 | Yes — £7,500 | £7,500 – £27,500 |
| Hybrid heat pump | £5,000 – £10,000 | No (as of 2026) | £5,000 – £10,000 |
Air source heat pumps are the most common choice for UK homes and the most cost-competitive once the grant is applied. Ground source delivers slightly higher efficiency but requires either a large garden for horizontal ground loops or deep boreholes — both of which add significantly to cost. Our air source vs ground source comparison guide covers the trade-offs in detail.
What you’re actually paying for: the cost breakdown
Heat pump quotes can look opaque. Here’s what the line items typically cover for a standard 3-bedroom semi-detached home with an air source system:
| Cost component | Typical range | Notes |
|---|---|---|
| Heat pump unit (ASHP) | £3,000 – £7,000 | Depends on output (kW) and brand |
| Hot water cylinder | £600 – £1,200 | Required if you don’t have one |
| Installation labour | £2,000 – £4,000 | 2–3 days for a typical install |
| Electrical work | £300 – £800 | New consumer unit circuit or upgrades |
| Radiator upgrades | £0 – £3,000 | Only if existing rads are undersized |
| Pipework/groundwork | £200 – £1,000 | Varies by property layout |
| Commissioning & MCS paperwork | Included | Must be included — required for BUS grant |
The biggest variable most homeowners underestimate is radiator upgrades. Heat pumps run at lower flow temperatures (around 45–55°C) compared with a gas boiler (70–80°C), so existing radiators may need to be replaced with larger ones to deliver the same heat output. A well-insulated modern home often needs no changes; an older poorly-insulated property could need all radiators swapped out.
Do you need to upgrade your insulation first?
Technically, no — but practically, yes in many cases. A heat pump is sized to the heat loss of your home. Poor insulation means higher heat loss, which means you need a bigger (and more expensive) unit that then costs more to run. The Energy Saving Trust recommends insulating before installing wherever possible. Loft insulation and cavity wall fill are the cheapest wins — often £300–£800 — and can drop your required pump capacity by a full kilowatt.
The Boiler Upgrade Scheme: £7,500 off the price
The Boiler Upgrade Scheme (BUS) is a government grant that pays £7,500 directly to your MCS-certified installer, who then deducts it from your invoice. You never handle the money — the grant just reduces what you owe. As of September 2026, the scheme is still fully funded and open to applications.
To qualify you need to:
- Own a property in England, Scotland, or Wales (Northern Ireland has a separate scheme)
- Have a valid Energy Performance Certificate (EPC) with no outstanding recommendation to insulate your loft or cavity walls
- Use an MCS-certified installer
- Be replacing a fossil fuel heating system (gas, oil, or LPG boiler, or electric storage heaters)
Our dedicated heat pump grants guide covers BUS eligibility in full, including what happens if your EPC has insulation recommendations.
Running costs: what to budget annually
Installation cost is only half the picture. Heat pumps run on electricity, which is currently more expensive per unit than gas — but a well-specified heat pump uses significantly less energy than it produces, thanks to its Coefficient of Performance (CoP). A typical ASHP achieves a seasonal CoP of 2.5–3.5, meaning for every £1 of electricity consumed, you get £2.50–£3.50 worth of heat.
Based on Ofgem’s current price cap rates (electricity at approximately 25p/kWh, gas at approximately 6p/kWh), a typical 3-bed home might spend £900–£1,400/year running an ASHP — roughly comparable to a modern gas boiler once you factor in the efficiency gain. Our heat pump running costs post works through the numbers in more detail, and our savings calculator lets you model your specific home.
Getting quotes: what to look for
Always get at least three quotes. Any installer worth using will conduct a heat loss survey of your home before quoting — this is a legal requirement under MCS standards and not optional. If an installer quotes without visiting or asks you to estimate your own heat loss, walk away.
Key things to check in a quote:
- Is the BUS grant deducted from the total, or are you expected to claim it separately? (It should be deducted — the installer handles it.)
- Does the quote include commissioning and MCS certification paperwork?
- Are radiator upgrades included, or listed separately?
- What warranty comes with the unit, and who supports it?
- Is the installer MCS-certified? (Check at mcscertified.com)
Heat pump costs by home type
Every property is different, but these are typical all-in costs for an air source heat pump including the BUS grant deduction:
| Home type | Gross cost (before grant) | Net cost (after £7,500 BUS) |
|---|---|---|
| 2-bed flat or terraced house | £8,000 – £11,000 | £500 – £3,500 |
| 3-bed semi-detached | £10,000 – £14,000 | £2,500 – £6,500 |
| 4-bed detached | £13,000 – £18,000 | £5,500 – £10,500 |
| Older detached needing radiator upgrades | £15,000 – £22,000 | £7,500 – £14,500 |
These figures are indicative — your actual quote depends on your home’s specific heat loss, existing pipework, and the installer you choose. Use them as a sanity-check when you receive quotes, not as a fixed target.
Is it worth it financially?
The answer is genuinely “it depends” — on your current fuel (oil and LPG homes almost always benefit more than gas homes), your insulation level, whether you have solar panels, and your electricity tariff. Nesta’s large-scale heat pump field trial found that households replacing oil heating saved an average of £700/year, while those replacing gas saved more modestly. Read our full analysis in our is a heat pump worth it guide.
One thing is clear: the economics improve significantly with the BUS grant in play and with a well-sized, properly commissioned installation. A rushed install without proper heat loss calculation can leave you with a system that underperforms and costs more to run than it should.