Last reviewed: 21 September 2026 | By Evolving Home editorial team
Heat Pump Cost UK 2026: Install Prices, BUS Grant & Running Costs
Plan from the full pre-grant install price. Editorial UK air-source whole-system ranges often sit around £8,000–£12,000 before a quote, with ground-source work commonly higher once groundworks are included. In England and Wales the Boiler Upgrade Scheme (BUS) standard category for air-to-water and ground-source heat pumps is £7,500 (illustrative; eligibility is not assessed here). Confirm the current category and whether your property qualifies on GOV.UK and with an MCS-certified installer before subtracting anything from a planning range.
Evidence and editorial review
What this guidance can—and cannot—tell you
By Evolving Home editorial team
Last reviewed 21 September 2026
Claim status
Indicative planning guide only — not a BUS decision, not a quote, and not a suitability diagnosis. BUS is live in England and Wales and installer-led. Standard heat-pump grant is £7,500 (illustrative; eligibility not assessed). Eligible off-gas oil/LPG properties may receive £9,000 for air-to-water or ground-source heat pumps (time-limited; confirm on GOV.UK). Confirm current amounts on GOV.UK and with an MCS-certified installer.
Limitations
- Cost, seasonal efficiency, comfort, running cost and carbon outcomes depend on design, fabric, emitters, controls, weather and tariffs.
- This guide is not a room-by-room heat-loss calculation, MCS design, quote, BUS eligibility decision or suitability diagnosis.
- Health Score → claim → Confirm organises property facts; Confirm does not move the Health Score 0–100.
- Evolving Home does not determine BUS eligibility. Health Score and property estimates are not an official grant decision. Confirm eligibility, property rules, and current grant levels with an MCS-certified installer and GOV.UK/Ofgem.
What to verify
- The current BUS category on GOV.UK and the full installed price through an MCS-certified installer.
- A room-by-room heat-loss calculation, design flow temperature and emitter sizing.
- Hot-water, electrical supply, outdoor-unit, noise, planning and condensate constraints.
- Official BUS eligibility checker: https://www.gov.uk/apply-boiler-upgrade-scheme/check-if-youre-eligible
See the scoring methodology and evidence hierarchy before treating an indicative result as a decision input.
How to use this page
Figures below are editorial planning ranges and published BUS categories — not Evolving Home prices, not your home's quote, and not a BUS decision. Start an indicative Health Score, claim the home, then Confirm facts you actually know. Confirm does not move the 0–100 and does not approve a grant.
Pre-grant install cost (UK planning ranges)
Ask every installer for one itemised whole-system price covering the outdoor unit or ground array, emitters, hot water, electrical work, controls, scaffolding, making-good and commissioning. Do not treat a headline unit price as the project cost. Ranges here are illustrative planning bands from public UK retrofit guidance, not a quote for your home.
Air-source (air-to-water) heat pump
- Heat pump unit: £3,000–£5,000
- Hot water cylinder: £800–£1,200 (if needed)
- Installation labour: £2,000–£3,500
- Radiator or emitter upgrades: £1,000–£2,500 (often required)
- Electrical upgrades: £500–£1,000 (if needed)
- Total (pre-grant, illustrative): £8,000–£12,000
- Whole-system quotes can sit above this band when fabric, emitters, electrics or access are difficult. Deduct BUS only after an MCS installer confirms a voucher category.
Ground-source heat pump
- Heat pump unit: £6,000–£8,000
- Ground loop or borehole: £5,000–£8,000
- Hot water cylinder: £800–£1,200
- Installation labour: £2,000–£3,000
- Additional enabling work: £1,000–£2,000
- Total (pre-grant, illustrative): £14,000–£20,000
- Geology, access, permissions and array design dominate cost. Eligibility is not assessed on this page.
Combi-boiler homes often need stored hot water. Space constraints can change the quote — see retrofitting a heat pump without a cylinder. If a standard air-to-water design is not a fit, compare heat-pump alternatives rather than forcing one technology.
BUS grant: show the full price first, then net a confirmed category
BUS is an installer-led voucher in England and Wales. The installer applies; you still pay any remaining cost. Amounts below are the published categories from GOV.UK — what you can get and Ofgem property-owner guidance, re-checked 21 September 2026. They are illustrative until your MCS installer confirms the category for a properly made application. Scotland and Northern Ireland use different routes.
| Published category | Illustrative amount | What to confirm |
|---|---|---|
| Air-to-water / ground-source (standard) | £7,500 | Technology, existing heating system, property and MCS installation |
| Residential air-to-air | £2,500 | Residential-only on current public guidance; not a drop-in boiler equivalent |
| Rural off-gas biomass | £5,000 | Extra rural / off-gas conditions; not a heat-pump amount |
| Off-gas oil/LPG heat-pump uplift | £9,000 | Eligible off-gas oil/LPG properties may receive £9,000 for air-to-water or ground-source heat pumps (time-limited; confirm on GOV.UK). |
Worked net maths (illustrative — not your quote)
Always keep the full itemised price on the page. Only subtract a BUS category after GOV.UK / the MCS installer confirm it applies. This page does not auto-net grants from planning ranges.
- Full pre-grant quote (example): £14,000 itemised air-to-water install.
- If the standard BUS category is later confirmed: remaining contribution in this example is £14,000 − £7,500 = £6,500.
- If no voucher is confirmed: plan on the full £14,000. Do not assume eligibility from an address, EPC band, or this guide.
- If a different published category is confirmed: subtract that amount only — air-to-air is £2,500; the time-limited off-gas oil/LPG heat-pump uplift is £9,000 and is not universal.
- You must own the property (including rentals and some business premises) and be replacing fossil fuel heating (oil, gas, electric, or LPG).
- Scheme is for properties in England or Wales; Scotland and Northern Ireland use different routes.
- Your installer typically handles the voucher application; installations must meet scheme timing and product standards.
- Having previously received funding for energy efficiency (for example insulation) does not by itself block BUS — confirm current rules on GOV.UK.
- Biomass grants have extra rural / off-gas conditions. New-build and social housing have important exclusions.
Official checker: GOV.UK BUS eligibility. Other UK grant routes sit on the UK energy grants 2026 hub. This page does not copy loan caps onto the heat-pump URL.
Score → claim → Confirm (not a BUS decision)
Start an indicative Health Score, claim the home, then Confirm facts you know. That path organises property context before MCS quotes. It is not a BUS decision, not a quote, and not a suitability diagnosis. Confirm does not move the Health Score 0–100.
Start Health Score, then claimRunning costs, tariffs and bill myths
Running cost is electricity used to deliver useful heat, plus standing charges, plus how the home is occupied. A heat pump does not guarantee a lower bill than a modern gas boiler. Compare the same measured heat demand, a stated seasonal performance (SCOP), and the tariffs actually available to this property.
SCOP is heat delivered per unit of electricity over a heating season. A design SCOP of 3.0 means 3 kWh of heat per 1 kWh of electricity in the model — not a promised bill. Ask for the design flow temperature and the weather assumption behind that number, then compare it with monitored performance after commissioning.
| System being replaced | What often drives the result | Evidence to compare |
|---|---|---|
| Oil or LPG | Delivered-fuel price, boiler efficiency and any off-gas BUS category | Invoices, annual fuel volume and itemised design quote |
| Direct electric or storage heating | Tariff periods, occupied rooms, controls and delivered seasonal efficiency | Half-hourly data where available and room-by-room heat loss |
| Modern mains-gas boiler | Gas/electricity price ratio, flow temperature, fabric and tariff — no guaranteed saving | Annual gas use adjusted for hot water, proposed SCOP and dated unit rates |
Tariff check, not a saving promise
Heat-pump or time-of-use tariffs can change the electricity unit rate, but availability, standing charges and whether the home can shift load are property-specific. Model the tariff you can actually take, including any off-peak window the design relies on. We do not publish a universal annual-saving figure versus gas.
Replacing a boiler — what still has to be true
A heat pump can replace a fossil boiler where the design meets the home's space-heating and hot-water demand. BUS public guidance says the new system must replace fossil or electric heating and must not replace an existing low-carbon system; hybrid heat-pump-plus-boiler packages are not a BUS category on current GOV.UK pages. None of that is an automatic approval for your home.
- Heat loss and emitters: room-by-room calculation at the proposed flow temperature — not a rule-of-thumb kW from floor area alone.
- Hot water: stored volume, recovery and space; combi homes should not assume a generic cylinder.
- Electrical supply: consumer unit, protective devices and running current at the design point.
- Outdoor unit or ground array: clearances, noise, condensate, access and permissions.
- EPC band C is not a universal BUS prerequisite on current Ofgem property-owner guidance. Practical fabric upgrades can still change running cost — see home insulation and EPC rating explained.
Air-source vs ground-source at a glance
| Feature | Air source (ASHP) | Ground source (GSHP) |
|---|---|---|
| Pre-grant planning range | Illustrative £8,000–£12,000; whole-system quote required | Illustrative £14,000–£20,000; groundworks quote required |
| BUS (if later confirmed) | Standard air-to-water £7,500. Eligible off-gas oil/LPG properties may receive £9,000 for air-to-water or ground-source heat pumps (time-limited; confirm on GOV.UK). | Standard ground-source £7,500. Eligible off-gas oil/LPG properties may receive £9,000 for air-to-water or ground-source heat pumps (time-limited; confirm on GOV.UK). |
| Plan with | Full pre-grant cost first | Full pre-grant cost first |
| Feasibility focus | Heat loss, emitters, hot water, electrical supply and outdoor siting | The same checks plus land, geology, permissions and ground access |
Design checks that change the price
Insulation and heat loss
Heat pumps work with the home you have, but high heat loss raises both capital cost (larger plant, more emitters) and running cost. Sequence fabric repairs with the heating design rather than treating an EPC band as a pass/fail gate. Band C is a common planning target — not a universal BUS rule and not current rental law by itself. Landlord Band C planning lives on EPC rating C.
Radiators and flow temperature
Designs often use lower flow temperatures than older boilers. Emitters may need resizing or balancing. If you are still on gas, try lowering boiler flow temperature before treating a heat pump as the only efficiency step.
Electrical supply and cold weather
Capacity, defrost and efficiency must be checked at the project design temperature. A correctly selected unit can provide heat in sub-zero weather; that is not the same as unchanged efficiency or an unchanged bill.
Finding MCS-certified installers
MCS certification is required for BUS. Use the MCS installer search. Compare more than one quote on the same heat-loss calculation, scope and design conditions. Check certification, insurance, complaints process, design SCOP assumptions and warranty terms.
Payback is not a national number
These steps use full install cost and do not auto-deduct BUS. Only apply a grant after eligibility is confirmed with your installer / GOV.UK. No fuel-switch category guarantees a fixed payback year.
- Start with the full itemised install price, including emitters, hot water and electrical work.
- Subtract only a BUS category confirmed by the installer for a properly made application.
- Convert measured annual fuel use into useful heat using a stated existing-system efficiency.
- Divide useful heat by the proposed seasonal performance, then apply a dated tariff.
- Show maintenance, finance, tariff and performance sensitivity — not one headline year.
Heat pumps, EPC ratings, and real bills
A heat-pump installation can change your EPC rating, but the direction and size depend on the certificate methodology, existing system and complete design. A modelled band change does not automatically mean lower monthly direct debits.
Current Ofgem property-owner guidance recommends considering practical energy-efficiency work, but does not make outstanding EPC loft or cavity recommendations a universal prerequisite. Treat the EPC as a modelling view; use meter readings, heat-loss design and dated tariffs for financial planning.
Health Score and the guides hub.
Start from the score, then Confirm
Indicative Health Score → claim the home → Confirm known facts. Not a BUS decision, not a quote, not a suitability diagnosis. Confirm does not move the 0–100.
Start Home Health ScoreFrequently Asked Questions
How much does a heat pump cost in the UK in 2026?
Plan from a full pre-grant whole-system quote, not a unit price. Editorial air-source planning ranges often sit around £8,000–£12,000 before a quote; ground-source work is commonly higher once groundworks are included. Emitters, hot water, electrical work and access can move the total. These are not Evolving Home prices and not a quote for your home.
How much is the BUS grant for a heat pump?
In England and Wales the published standard BUS category for air-to-water and ground-source heat pumps is £7,500 (illustrative; eligibility is not assessed here). Residential air-to-air is £2,500. Eligible off-gas oil/LPG properties may receive £9,000 for air-to-water or ground-source heat pumps (time-limited; confirm on GOV.UK). Confirm the current category on GOV.UK and with an MCS-certified installer before subtracting anything.
Can I replace my gas boiler with a heat pump?
A correctly designed heat pump can replace a fossil boiler where it meets the home's space-heating and hot-water demand. That is a design and quote question, not an automatic yes. BUS public guidance currently excludes hybrid heat-pump-plus-boiler packages and replacing an existing low-carbon system. EPC band C is not a universal BUS prerequisite.
Will a heat pump cut my bills, and how do tariffs change the answer?
Not guaranteed. Running cost depends on measured heat demand, delivered seasonal performance, standing charges and the electricity tariff you can actually take. Replacing oil, LPG or direct electric heating is more often favourable than swapping a modern gas boiler. Model time-of-use or heat-pump tariffs only if they are available to this property — we do not publish a universal saving versus gas.
What is a realistic payback for a UK heat pump?
There is no national payback year. Start from the full itemised install price, subtract only a BUS category confirmed by an MCS installer, then compare dated tariffs against measured fuel use. Finance, maintenance and performance sensitivity change the answer. Treat single-year payback claims as marketing until you have that calculation.
Do heat pumps work in UK winters?
Yes, when they are correctly sized and commissioned for the property and local design conditions. Seasonal performance varies with weather, flow temperature, controls and use, so check the design assumptions rather than relying on a national average.
Next steps
- Keep the full pre-grant price: do not net BUS until a category is confirmed.
- Get a heat-loss survey: same scope for every MCS quote.
- Confirm BUS on GOV.UK / with the installer: voucher process if rules are met — not guaranteed.
- Model tariffs with measured heat: no universal saving versus gas.
- Score → claim → Confirm: organise facts; it is not a grant or design decision.
Heat pump professional? Send a partner submission while the network is under construction.
Related guides
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Heat Pump Alternatives
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UK Energy Grants 2026
Current scheme status including BUS standard illustrative £7,500 (eligibility not assessed), Warm Homes Loan Scheme (loan, not a grant), evidence requirements, and what to verify before applying.
EPC Rating Explained
UK EPC A–G is a government modelled energy-performance rating mapped from a SAP score, not a meter reading or bill promise. Current MEES is generally E+ with exemptions; 2030 PRS is not today’s law.
EPC Band C
What EPC Band C (SAP 69–80) means for homeowners and landlords — 2030 C-equivalent is policy, not current law.