The other decision is the gas supply. If gas is used for nothing else — no gas hob, fire or cooker — you can have the supply capped and the meter removed, which ends the gas standing charge of about £108 a year at current price cap rates. We talk through each choice at the survey so you can decide before you accept the quote.
Semi-detached and terraced houses in Hampshire often have an airing cupboard that can be reused for a heat pump cylinder. Installers in Hampshire take out the old boiler and flue and seal the wall opening as part of the job. Households across Hampshire moving off gas can have a survey in Hampshire that compares running costs on realistic assumptions.
Who it suits
- System or regular boiler homes with an existing airing cupboard
- Combi owners who can find space for a hot water cylinder
- Households ready to give up gas entirely and drop the standing charge
- Boilers that are old, unreliable or due for replacement
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 Hampshire
Here are typical prices for replacing a gas boiler with a heat pump in Hampshire, 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 | £9,800–£12,900 | £2,300–£5,400 |
| 2–3 bedroom terrace or semi | 5–7 kW | £10,800–£13,900 | £3,300–£6,400 |
| 3 bedroom semi or small detached | 6–9 kW | £12,350–£15,950 | £4,850–£8,450 |
| 4 bedroom detached | 8–12 kW | £14,400–£18,550 | £6,900–£11,050 |
| 5+ bedroom or larger older house | 11–16 kW | £17,000–£23,200 | £9,500–£15,700 |
Installed, inc VAT: unit, cylinder, controls, minor pipework and commissioning.
Towns we cover in Hampshire
We cover 23 towns in Hampshire 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 |
|---|---|---|---|
| Southampton | SO14 | Totton | 7 h 56 min |
| Portsmouth | PO1 | Gosport | 7 h 57 min |
| Basingstoke | RG21 | Alton | 7 h 52 min |
| Gosport | PO12 | Portsmouth | 7 h 57 min |
| Waterlooville | PO7 | Havant | 7 h 56 min |
| Farnborough | GU14 | Aldershot | 7 h 52 min |
| Eastleigh | SO50 | Southampton | 7 h 55 min |
| Winchester | SO23 | Eastleigh | 7 h 54 min |
| Havant | PO9 | Waterlooville | 7 h 56 min |
| Andover | SP10 | Winchester | 7 h 52 min |
| Fareham | PO16 | Gosport | 7 h 56 min |
| Aldershot | GU11 | Farnborough | 7 h 52 min |
| Fleet | GU51 | Farnborough | 7 h 52 min |
| Totton | SO40 | Southampton | 7 h 55 min |
| New Milton | BH25 | Lymington | 7 h 57 min |
| Bordon | GU35 | Alton | 7 h 53 min |
| Yateley | GU46 | Fleet | 7 h 51 min |
| Alton | GU34 | Bordon | 7 h 53 min |
| Romsey | SO51 | Totton | 7 h 55 min |
| Fordingbridge | SP6 | Ringwood | 7 h 55 min |
| Lymington | SO41 | New Milton | 7 h 57 min |
| Petersfield | GU31 | Bordon | 7 h 55 min |
| Ringwood | BH24 | Fordingbridge | 7 h 56 min |
Replacing a gas boiler with a heat pump questions
Can a heat pump replace a combi boiler?
Yes, but you need room for a hot water cylinder, because heat pumps store hot water rather than heating it on demand. Most homes find a space in a cupboard, utility room, garage or under the stairs, and compact or combined indoor units help where space is tight. The survey measures the options first, so you know where everything will go before you accept the quote.
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.
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.
Do I need to replace the cylinder I already have?
Usually, yes. Older cylinders have a small internal coil designed for water from a boiler at around 60–70°C, and they cannot take in heat quickly enough at the lower temperatures a heat pump runs at. A heat pump cylinder has a larger coil. On its own, a cylinder supplied and fitted has a guide price of £1,200–£2,200, installed and including VAT, though it is normally part of the full system price.