- Area
- Wiltshire
- Postcode district
- SN12
- Nation
- England
- Guide price
- From £9,600 inc VAT
- Survey
- Free for installation enquiries
Oil and LPG boiler replacement in Melksham: what to expect
Every property in Melksham 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.
Owners across Wiltshire can have oil tank removal arranged alongside a heat pump installation in Melksham. Cottages and farmhouses in and around Melksham often have solid walls, so the survey looks closely at construction and draughts.
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.
- Owners tired of fuel deliveries and tank maintenance
- Rural and village homes off the mains gas grid
- Detached houses and bungalows with garden space for the unit
What's included
- Network operator notification and electrical connection
- Free survey with a detailed heat loss calculation for older construction
- Help arranging LPG tank collection with your supplier
- Outdoor unit, heat pump cylinder, controls and radiator changes
- Oil tank draining and removal or making safe, as set out in your quote
Bungalows and detached houses near Melksham running on LPG can move to a heat pump, with the tank collected by the supplier.
Grants and rules for heat pumps in England
Homes in Melksham 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.
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.
What to budget for replacing an oil or LPG boiler with a heat pump in Melksham
The ranges below are typical installed prices for homes in Wiltshire, including VAT. A survey sets the exact figure, because two similar-looking houses in Melksham can need quite different radiators and pipework.
| Home | Typical size | Installed guide price | After £9,000 grant |
|---|---|---|---|
| 1–2 bedroom flat or small terrace | 4–5 kW | £9,600–£12,650 | £600–£3,650 |
| 2–3 bedroom terrace or semi | 5–7 kW | £10,600–£13,650 | £1,600–£4,650 |
| 3 bedroom semi or small detached | 6–9 kW | £12,100–£15,650 | £3,100–£6,650 |
| 4 bedroom detached | 8–12 kW | £14,150–£18,200 | £5,150–£9,200 |
| 5+ bedroom or larger older house | 11–16 kW | £16,650–£22,750 | £7,650–£13,750 |
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.
How long is the heating season in Melksham?
On the shortest day Melksham gets about 7 hours 51 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.
What happens after you enquire in Melksham?
- Send your postcode and a few details, or use the guide price tool.
- A surveyor visits your Melksham home, measures every room and checks where the outdoor unit can go.
- You receive a heat loss design and a fixed written quote, with any grant shown where it applies.
- Installers fit the unit, cylinder and any radiator changes, typically over 2–4 days on site.
- The system is commissioned, set up with weather compensation and handed over with the paperwork.
Replacing an oil or LPG boiler with a heat pump in Melksham: questions
Do you cover Corsham as well as Melksham?
Yes. We arrange surveys and installation in Corsham, which is about 5 miles north-west of Melksham, and across Wiltshire.
How long does installation take in Melksham?
Most installations take 2–4 days on site. Jobs with several radiator changes or new pipework take longer, and your quote for a Melksham home states the expected time.
How soon can you survey a home in Melksham?
Survey dates depend on how busy installers are in Wiltshire. We offer the next available dates when you enquire and confirm them in writing.
Can a heat pump cope with an exposed rural spot?
Yes. Air source heat pumps are designed to keep working well below freezing, and they periodically defrost, giving off a little vapour, which is normal. In exposed locations the installer chooses a sheltered position where possible, raises the unit to clear snow and let defrost water drain, and sizes the system for the local winter design temperature used in the heat loss calculation.
What happens with a leased LPG tank?
Leased LPG tanks belong to the supplier, so the supplier arranges collection. Check your contract for notice periods and any charges before you fix a date. We time the switchover so you are not left without heating, and once the heat pump is commissioned the supplier can empty and remove the tank. Bottled LPG cylinders are simply returned.