If you have a combi, there is no cylinder at the moment, so the first question is where one can go. If you have a system or regular boiler, you already have a cylinder, but it is unlikely to suit a heat pump, which needs a larger internal coil to heat water at lower temperatures. Regular boilers also have tanks in the loft that can usually be taken out, freeing space.
Installers in the West Midlands take out the old boiler and flue and seal the wall opening as part of the job. Households across the West Midlands moving off gas can have a survey in the West Midlands that compares running costs on realistic assumptions. Semi-detached and terraced houses in the West Midlands often have an airing cupboard that can be reused for a heat pump cylinder.
Who it suits
- Combi owners who can find space for a hot water cylinder
- Homes in England and Wales eligible for the Boiler Upgrade Scheme
- Boilers that are old, unreliable or due for replacement
- Households ready to give up gas entirely and drop the standing charge
Grants and rules for heat pumps in England
In England the Boiler Upgrade Scheme gives £7,500 towards an air source heat pump (£9,000 if it replaces oil or LPG, from 21 July 2026 to 31 March 2027), and since 28 April 2026 a valid EPC is no longer needed. The grant is applied for by the MCS-certified installer and shown as a deduction on your quote.
Installing heat pumps is zero-rated for VAT across the UK until 31 March 2027. Since 29 May 2025, permitted development in England allows up to two air source heat pumps on a house, each up to 1.5 m³, with no blanket 1 m boundary rule — the installation must still meet the MCS planning standards, including the noise check. Listed buildings, flats and some conservation-area positions need extra consent, which we check at survey.
Gas boiler to heat pump prices in the West Midlands
Here are typical prices for replacing a gas boiler with a heat pump in the West Midlands, installed and including VAT. Use the guide price tool for a figure based on your home, then a survey confirms it in writing.
| Home | Typical size | Installed guide price | After £7,500 grant |
|---|---|---|---|
| 1–2 bedroom flat or small terrace | 4–5 kW | £9,500–£12,500 | £2,000–£5,000 |
| 2–3 bedroom terrace or semi | 5–7 kW | £10,500–£13,500 | £3,000–£6,000 |
| 3 bedroom semi or small detached | 6–9 kW | £12,000–£15,500 | £4,500–£8,000 |
| 4 bedroom detached | 8–12 kW | £14,000–£18,000 | £6,500–£10,500 |
| 5+ bedroom or larger older house | 11–16 kW | £16,500–£22,500 | £9,000–£15,000 |
Installed, inc VAT: unit, cylinder, controls, minor pipework and commissioning.
Towns we cover in the West Midlands
We cover 28 towns in the West Midlands for replacing a gas boiler with a heat pump. Each links to local guide prices and the grant position for England.
| Town | Postcode district | Nearest town | Midwinter daylight |
|---|---|---|---|
| Birmingham | B3 | Edgbaston | 7 h 39 min |
| Coventry | CV1 | Kenilworth | 7 h 40 min |
| Wolverhampton | WV1 | Willenhall | 7 h 38 min |
| Dudley | DY2 | Brierley Hill | 7 h 39 min |
| Walsall | WS1 | Wednesbury | 7 h 38 min |
| Solihull | B91 | Shirley | 7 h 40 min |
| Sutton Coldfield | B75 | Erdington | 7 h 38 min |
| West Bromwich | B70 | Oldbury | 7 h 39 min |
| Halesowen | B63 | Brierley Hill | 7 h 40 min |
| Stourbridge | DY8 | Brierley Hill | 7 h 40 min |
| Smethwick | B66 | West Bromwich | 7 h 39 min |
| Willenhall | WV13 | Bilston | 7 h 38 min |
| Tipton | DY4 | Dudley | 7 h 39 min |
| Shirley | B90 | Hall Green | 7 h 40 min |
| Brierley Hill | DY5 | Stourbridge | 7 h 39 min |
| Aldridge | WS9 | Walsall | 7 h 38 min |
| Wednesbury | WS10 | Bilston | 7 h 39 min |
| Kingswinford | DY6 | Brierley Hill | 7 h 39 min |
| Bilston | WV14 | Willenhall | 7 h 38 min |
| Edgbaston | B15 | Harborne | 7 h 40 min |
| Erdington | B23 | Sutton Coldfield | 7 h 39 min |
| Great Barr | B43 | Walsall | 7 h 38 min |
| Hall Green | B28 | Shirley | 7 h 40 min |
| Harborne | B17 | Edgbaston | 7 h 40 min |
| Kings Heath | B14 | Moseley | 7 h 40 min |
| Knowle | B93 | Solihull | 7 h 40 min |
| Moseley | B13 | Kings Heath | 7 h 40 min |
| Oldbury | B69 | West Bromwich | 7 h 39 min |
Replacing a gas boiler with a heat pump questions
What if my gas boiler is fairly new?
A newer boiler can still be replaced, but the timing is worth weighing. Some owners switch when the boiler needs a major repair; others prefer to plan the change for a convenient time. Across the UK, heat pump installation is zero-rated for VAT until 31 March 2027. A hybrid system, which keeps the boiler alongside a heat pump, is another option, though it is not eligible for the Boiler Upgrade Scheme in England and Wales.
Is there a grant to replace a gas boiler with a heat pump?
In England and Wales, the Boiler Upgrade Scheme gives £7,500 towards an air-to-water heat pump that replaces a gas boiler, for eligible owners of existing homes. The MCS-certified installer applies to Ofgem and deducts the grant from your quote, and Ofgem contacts you to confirm. Scotland has separate Home Energy Scotland funding, and Northern Ireland has no dedicated homeowner grant at present.
Will my hot water run out with a heat pump?
Not if the cylinder is sized properly for your household. The survey asks how many people live in the home, how many bathrooms you have and whether you prefer baths or showers, then sizes the cylinder to suit. The heat pump reheats the cylinder on a schedule, often overnight and again during the day, and an immersion heater acts as a backup.
Should I have my gas meter removed?
If gas is used for nothing else, removing the meter ends the gas standing charge, which is about £108 a year at the October to December 2026 price cap. If you still cook on gas or have a gas fire, you will need to keep the supply. Meter removal is arranged through your gas supplier, usually once the heat pump is running; the pipe at the boiler position is capped during the installation.