- Area
- Surrey
- Postcode district
- GU9
- Nation
- England
- Guide price
- From £10,150 inc VAT
- Survey
- Free for installation enquiries
Before you book: replacing an oil or LPG boiler with a heat pump in Farnham
Every property in Farnham is different, so the design starts from measurements rather than a rule of thumb. That keeps the system the right size and the running costs predictable.
Rural properties near Farnham usually have garden space for the outdoor unit, sited away from windows and sheltered where possible. For homes outside Farnham 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.
- Eligible homes in England and Wales within the higher grant window
- Detached houses and bungalows with garden space for the unit
- Rural and village homes off the mains gas grid
What's included
- Oil tank draining and removal or making safe, as set out in your quote
- Free survey with a detailed heat loss calculation for older construction
- Help arranging LPG tank collection with your supplier
- Network operator notification and electrical connection
- Removal of the oil or LPG boiler and flue
If your home near Farnham is off the mains gas grid, a heat pump removes the need for oil or LPG deliveries.
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 Farnham quote.
There is no VAT on installing a heat pump anywhere in the UK until 31 March 2027. In England most houses can have an air source heat pump under permitted development, provided the unit meets the MCS noise and siting standards; the old 1 m boundary limit was removed on 29 May 2025. We flag listed buildings, flats and sensitive conservation-area positions at survey.
Oil and LPG boiler replacement costs around Farnham
Here are typical prices for replacing an oil or LPG boiler with a heat pump in Surrey, 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 £9,000 grant |
|---|---|---|---|
| 1–2 bedroom flat or small terrace | 4–5 kW | £10,150–£13,400 | £1,150–£4,400 |
| 2–3 bedroom terrace or semi | 5–7 kW | £11,250–£14,450 | £2,250–£5,450 |
| 3 bedroom semi or small detached | 6–9 kW | £12,850–£16,600 | £3,850–£7,600 |
| 4 bedroom detached | 8–12 kW | £15,000–£19,250 | £6,000–£10,250 |
| 5+ bedroom or larger older house | 11–16 kW | £17,650–£24,100 | £8,650–£15,100 |
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 Farnham and what they mean
On the shortest day Farnham gets about 7 hours 52 minutes of daylight, and the winter sun reaches only around 15° above the horizon at noon. Winters this far south are milder than in most of the UK, which helps a heat pump run at low flow temperatures for much of the season.
How installation works in Farnham
- Start online with a guide price or call us.
- A home survey in Farnham gives us the room-by-room heat loss.
- Your written quote sets out the design, the price and the grant position where you live.
- Installation is booked for dates that suit you; most homes take 2–4 days on site.
- After commissioning you get a handover of the controls and settings, plus the certificates.
Replacing an oil or LPG boiler with a heat pump in Farnham: questions
Can you service a heat pump in Farnham that someone else installed?
Yes. We arrange servicing and repairs for most air source heat pumps in Farnham, whoever fitted them. Tell us the make and model when you book.
How soon can you survey a home in Farnham?
Survey dates depend on how busy installers are in Surrey. We offer the next available dates when you enquire and confirm them in writing.
Do I need new radiators for a heat pump in Farnham?
Often some, not all. Heat pumps run best at lower water temperatures, so rooms with small radiators may need larger ones. The survey of your Farnham home gives a room-by-room list.
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.
Is a heat pump cheaper to run than oil?
It depends on oil prices, your home's insulation, the flow temperature and your electricity tariff, so there is no single answer. At the October to December 2026 price cap, a heat pump with a seasonal efficiency of 3.0 delivers heat for about 8.8p per kWh, and at 3.5 about 7.5p. Compare that with your oil cost per kWh of heat, allowing for your boiler's efficiency; the survey estimate gives a figure for your home.