- Area
- Buckinghamshire
- Postcode district
- SL9
- Nation
- England
- Guide price
- From £10,000 inc VAT
- Survey
- Free for installation enquiries
What to know about replacing an oil or LPG boiler with a heat pump in Gerrards Cross
A heat pump suits most Gerrards Cross homes, but the details decide how efficiently it runs. Our survey looks at insulation, radiators and hot water use room by room.
Owners across Buckinghamshire can have oil tank removal arranged alongside a heat pump installation in Gerrards Cross. For homes outside Gerrards Cross reached by a long drive or narrow lane, delivery of the unit and cylinder is planned in advance.
Off-gas homes have a lot to plan when switching to a heat pump: the fuel tank, older walls, rural power supplies and higher heat loss.
- Detached houses and bungalows with garden space for the unit
- Older oil boilers nearing the end of their life
- Eligible homes in England and Wales within the higher grant window
What's included
- Network operator notification and electrical connection
- MCS certificate and grant application in England and Wales where eligible
- Outdoor unit, heat pump cylinder, controls and radiator changes
- Oil tank draining and removal or making safe, as set out in your quote
- Removal of the oil or LPG boiler and flue
Cottages and farmhouses in and around Gerrards Cross often have solid walls, so the survey looks closely at construction and draughts.
Grants and rules for heat pumps in England
Homes in Gerrards Cross can use the Boiler Upgrade Scheme, which takes £7,500 off the cost of an air source heat pump when it replaces fossil-fuel or electric heating. Replacing oil or LPG heating qualifies for £9,000 for installations from 21 July 2026 to 31 March 2027, and air-to-air systems for £2,500. The MCS-certified installer named in your quote applies for the grant and deducts it from the price.
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.
Oil and LPG boiler replacement costs around Gerrards Cross
These are guide prices for Buckinghamshire, installed and including VAT. Your final price is fixed in a written quote after the survey and depends on the heat loss of the house, the radiators that need changing and where the unit goes.
| Home | Typical size | Installed guide price | After £9,000 grant |
|---|---|---|---|
| 1–2 bedroom flat or small terrace | 4–5 kW | £10,000–£13,150 | £1,000–£4,150 |
| 2–3 bedroom terrace or semi | 5–7 kW | £11,050–£14,200 | £2,050–£5,200 |
| 3 bedroom semi or small detached | 6–9 kW | £12,600–£16,300 | £3,600–£7,300 |
| 4 bedroom detached | 8–12 kW | £14,700–£18,900 | £5,700–£9,900 |
| 5+ bedroom or larger older house | 11–16 kW | £17,350–£23,650 | £8,350–£14,650 |
Installed, inc VAT: unit, cylinder, controls, minor pipework and commissioning. The £9,000 Boiler Upgrade Scheme figure applies to oil and LPG replacements in England and Wales installed from 21 July 2026 to 31 March 2027.
Short winter days in Gerrards Cross and what they mean
Gerrards Cross sees roughly 7 hours 49 minutes of daylight in late December against 16 hours 39 minutes in June. Milder southern winters suit heat pumps well, though the system is still sized for a cold snap rather than an average day.
What happens after you enquire in Gerrards Cross?
- Tell us about your home: postcode, property type and current heating.
- We book a survey in Gerrards Cross; the surveyor measures rooms, windows and radiators and looks at cylinder space.
- The design and quote arrive in writing, including radiator changes and the outdoor unit position.
- On installation days the old system is removed and the new one fitted and filled.
- We commission the heat pump, show you the controls and register the installation.
Replacing an oil or LPG boiler with a heat pump in Gerrards Cross: questions
How long does a heat pump survey take in Gerrards Cross?
A home survey in Gerrards Cross usually takes one to two hours. The surveyor measures every heated room, checks windows, walls and radiators, and looks at where the outdoor unit and cylinder can go.
Where would the outdoor unit go on a Gerrards Cross house?
Usually at the side or rear, on a level base with space around it for airflow and servicing, away from bedroom windows where possible. The surveyor checks positions at your Gerrards Cross home.
Do you cover Chalfont St Peter as well as Gerrards Cross?
Yes. We arrange surveys and installation in Chalfont St Peter, which is about 2 miles north of Gerrards Cross, and across Buckinghamshire.
Will I need bigger radiators in an older cottage or farmhouse?
Often in some rooms, because thick solid walls and older windows lose more heat, and heat pumps work at lower water temperatures than oil boilers. The survey checks each room. Rooms with high ceilings or large windows are common candidates for a larger radiator. Where swapping radiators is impractical, a high-temperature unit can be considered, with lower efficiency as the trade-off.
How much is the grant for replacing an oil boiler with a heat pump?
In England and Wales, the Boiler Upgrade Scheme grant is £9,000 when an air-to-water heat pump replaces oil or LPG heating, for installations from 21 July 2026 to 31 March 2027. Otherwise the standard £7,500 applies. The installer claims it and deducts it from your quote. Scotland's Home Energy Scotland funding works differently and includes extra for eligible rural homes; Northern Ireland has no dedicated homeowner scheme at present.