- Area
- Lancashire
- Postcode district
- BB3
- Nation
- England
- Guide price
- From £9,300 inc VAT
- Survey
- Free for installation enquiries
What to know about replacing an oil or LPG boiler with a heat pump in Darwen
Homes around Darwen range from older terraces to newer estates, and each needs a different design. That is why we survey before we quote.
Rural properties near Darwen usually have garden space for the outdoor unit, sited away from windows and sheltered where possible. If your home near Darwen is off the mains gas grid, a heat pump removes the need for oil or LPG deliveries.
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.
- Older oil boilers nearing the end of their life
- Owners tired of fuel deliveries and tank maintenance
- Rural and village homes off the mains gas grid
What's included
- Outdoor unit, heat pump cylinder, controls and radiator changes
- Free survey with a detailed heat loss calculation for older construction
- Removal of the oil or LPG boiler and flue
- Help arranging LPG tank collection with your supplier
- Oil tank draining and removal or making safe, as set out in your quote
Cottages and farmhouses in and around Darwen often have solid walls, so the survey looks closely at construction and draughts.
Grants and rules for heat pumps in England
Homes in Darwen 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 Darwen
The ranges below are typical installed prices for homes in Lancashire, including VAT. A survey sets the exact figure, because two similar-looking houses in Darwen 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 | £9,300–£12,250 | £300–£3,250 |
| 2–3 bedroom terrace or semi | 5–7 kW | £10,300–£13,250 | £1,300–£4,250 |
| 3 bedroom semi or small detached | 6–9 kW | £11,750–£15,200 | £2,750–£6,200 |
| 4 bedroom detached | 8–12 kW | £13,700–£17,650 | £4,700–£8,650 |
| 5+ bedroom or larger older house | 11–16 kW | £16,150–£22,050 | £7,150–£13,050 |
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 Darwen and what they mean
On the shortest day Darwen gets only about 7 hours 26 minutes of daylight and the noon sun sits around 13° above the horizon. Northern winters tend to be longer, so a well-designed, efficient system matters more here because it runs for more of the year.
The steps for replacing an oil or LPG boiler with a heat pump in Darwen
- Send your postcode and a few details, or use the guide price tool.
- A surveyor visits your Darwen 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 Darwen: questions
Where would the outdoor unit go on a Darwen 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 Darwen home.
Can you service a heat pump in Darwen that someone else installed?
Yes. We arrange servicing and repairs for most air source heat pumps in Darwen, whoever fitted them. Tell us the make and model when you book.
How long does a heat pump survey take in Darwen?
A home survey in Darwen 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.
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.
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.