Heat pumps in Bristol: cost after the grant, running costs and one local installer quote

What a heat pump costs in Bristol after the grant

Heat pump prices aren't published by city, and installers price each home from a survey, so the fairest benchmark is the national median under the Boiler Upgrade Scheme.

Median installed cost of an air-to-water heat pump under the Boiler Upgrade Scheme, April–June 2026 (lower quartile £11,128, upper quartile £15,627): DESNZ BUS Statistics: July 2026, published 27 August 2026. This is the middle figure across all installations — a small, well-insulated house can come in well under it; a large, older house needing new radiators and a cylinder can come in well over it.

Bristol homes had 643 Boiler Upgrade Scheme grants paid between May 2022 and June 2026 — about 3.4 per 1,000 households. That is the highest rate of the 6 cities we cover (lowest: Birmingham, 0.9).

Local finance: Bristol City Council offers home energy efficiency loans through Lendology: "The maximum loan available is £20,000. There's a fixed interest rate of 4%" (council page). Compare that with any installer finance offer on the total repayable.

Running costs in Bristol: heat pump vs gas

Same 8,550 kWh of heat in every row: Ofgem's typical medium gas use of 9,500 kWh a year, delivered by a 90%-efficient boiler. Unit rates: South West direct-debit price cap, 1 October to 31 December 2026. Standing charges excluded — if you remove the gas meter entirely you also stop paying the gas standing charge (29.31p a day, about £110 a year here). Heat pump efficiencies: 2.78 is the median measured seasonal performance across 428 homes in the government's Electrification of Heat trial and 3.05 its upper quartile; 3.5 is the kind of figure a system designed to run at 45°C or below is designed to achieve, not a measured average.

On South West prices the heat pump's running cost depends almost entirely on its efficiency: at the trial median it is roughly level with gas; at 3.5 it is clearly cheaper, removing the gas meter saves the standing charge too, and a heat-pump or time-of-use tariff widens the gap. The design flow temperature in your quote is the best clue to which end you'll be at.

Bristol homes and heat pumps

Census 2021 counted 191,638 households in Bristol: 26.6% semi-detached, 32.1% terraced, 6.0% detached and 35.2% flats. 75.0% heat by mains gas alone, 13.0% by electricity alone and 1.3% through a district or communal heat network (England and Wales: 73.8%, 8.5% and 0.9%).

A third of Bristol homes are terraced and another third are flats — both higher than the national average. On a terrace the outdoor unit usually goes in the back garden or yard, where it has to pass the MCS 020(a) noise check at the nearest neighbouring window. In converted flats, permitted development allows only one unit of up to 0.6 cubic metres per block, and every owner with an interest in the building usually has to agree, so heat pumps in converted houses are harder.

Only 6% of Bristol homes are detached, so ground source systems with long trenches are rare; air source is the realistic option for most. Many Victorian houses have solid walls — the heat-loss survey tells you whether any radiators need upsizing.

Planning: where the outdoor unit can go

In England, an air source heat pump on a house is normally permitted development — no planning application — under rules relaxed on 29 May 2025. The old rule that the unit had to be at least 1 metre from the boundary has gone; the outdoor unit can be up to 1.5 cubic metres (0.6 on a block of flats); a detached house can have two units and other homes one; and the installation must meet the MCS 020(a) noise standard, which your installer checks. It can't go on a pitched roof, and listed buildings always need consent. In a conservation area or World Heritage Site the unit can't go on a wall or roof that fronts a road, or be nearer to a road bounding the property than the house itself — so it normally goes at the side or rear.

Bristol has 33 conservation areas (council page), so in much of the inner city the outdoor unit has to go at the side or rear rather than on a wall facing the road. The council's heat network, run by Vattenfall under City Leap, serves blocks and larger buildings rather than individual houses.

Do you qualify for the £7,500 grant?

• £7,500 off an air source or ground source heat pump (£2,500 for air-to-air). From 21 July 2026 to 31 March 2027, an air source or ground source heat pump replacing oil or LPG heating in a home with no mains gas connection gets £9,000 instead (not air-to-air).
• England and Wales only. Owner-occupiers and private landlords can apply, including for second homes and business premises; most new-build homes and social housing can't.
• The heat pump must replace fossil-fuel heating (gas, oil, LPG, coal) or direct electric heating. Since 28 April 2026 an EPC is no longer mandatory — if the home doesn't have a valid one, the installer provides other evidence.
• The installer applies, not you. An MCS-certified installer requests the voucher and takes it off your price; Ofgem contacts you to confirm. It is a discount on the price, not a free installation — you pay the balance.
• There is no income test and no benefits requirement.

Source: GOV.UK, Apply for the Boiler Upgrade Scheme (updated 16 Sep 2026); DESNZ notice of grant values (effective 21 Jul 2026); Ofgem BUS guidance for property owners v5.1 (2 Jul 2026). Full detail: Boiler Upgrade Scheme guide.

Getting a quote in Bristol

What the quote must contain — heat-loss calculation, flow temperature, named equipment, noise assessment and the grant as a line — is set out on the heat pump quotes page.

Questions from Bristol homeowners

Other areas

• Heat pumps in Birmingham
• Heat pumps in Sheffield
• Heat pumps in Newcastle
• Heat pumps in Doncaster
• Heat pumps in Nottingham
• Oil to heat pump: Cornwall
• Oil to heat pump: Somerset
• Oil to heat pump: Fens & Peterborough
• Oil to heat pump: Northumberland
• Oil to heat pump: Carmarthenshire & Pembrokeshire

Thinking about panels too? Solar panels in Bristol.

Sources

1. GOV.UK, Apply for the Boiler Upgrade Scheme (updated 16 September 2026); DESNZ notice of grant categories and values (effective 21 July 2026); Ofgem, BUS guidance for property owners v5.1 (2 July 2026).
2. DESNZ, Boiler Upgrade Scheme statistics: July 2026 (27 August 2026) — median installed cost 2026 Q2; redemptions paid by local authority, May 2022 to June 2026.
3. Ofgem, Changes to energy price cap between 1 October and 31 December 2026 (26 August 2026) and regional unit rates and standing charges; electricity at 0% VAT from 1 October 2026 to 31 March 2027 (HMRC).
4. Ofgem, Typical Domestic Consumption Values decision (27 May 2026): medium gas 9,500 kWh, electricity 2,500 kWh, from 1 July 2026.
5. Energy Systems Catapult for DESNZ, Electrification of Heat demonstration project, summary report (December 2024): median measured air source heat pump seasonal performance (SPFH4) 2.78, interquartile range 2.55–3.05, 428 homes.
6. Office for National Statistics, Census 2021 tables TS044 (accommodation type), TS046 (central heating), TS050 (bedrooms) and TS054 (tenure), local authority level, via Nomis.
7. General Permitted Development (England) Order 2015, Schedule 2 Part 14 Class G, as amended by SI 2025/560 from 29 May 2025.
8. Bristol City Council, conservation areas, planning permission for solar panels and home energy efficiency loans (checked 23 September 2026).