- Area
- Glasgow and Dunbartonshire
- Postcode district
- G82
- Nation
- Scotland
- Guide price
- From £9,500 inc VAT
- Survey
- Free for installation enquiries
What to know about replacing an oil or LPG boiler with a heat pump in Dumbarton
Most homes can run on a heat pump if the system is designed properly, and Dumbarton is no different. The key is matching the heat pump and radiators to the home's heat loss.
For homes outside Dumbarton reached by a long drive or narrow lane, delivery of the unit and cylinder is planned in advance. If your home near Dumbarton 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.
- Owners tired of fuel deliveries and tank maintenance
- Older oil boilers nearing the end of their life
- Detached houses and bungalows with garden space for the unit
What's included
- Outdoor unit, heat pump cylinder, controls and radiator changes
- 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
Bungalows and detached houses near Dumbarton running on LPG can move to a heat pump, with the tank collected by the supplier.
Grants and rules for heat pumps in Scotland
The Boiler Upgrade Scheme does not apply in Scotland. Instead, homeowners in Dumbarton can apply to Home Energy Scotland for a grant of up to £7,500 towards a heat pump, with up to £1,500 more for eligible rural and island homes, plus an optional interest-free loan of up to £7,500. You need a written funding offer before any work starts.
There is no VAT on installing a heat pump anywhere in the UK, Scotland included, until 31 March 2027. Scottish permitted development rules and building standards apply, and the surveyor checks the unit position and any listed or conservation-area constraints.
Oil and LPG boiler replacement prices in Dumbarton
Here are typical prices for replacing an oil or LPG boiler with a heat pump in Glasgow and Dunbartonshire, 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 |
|---|---|---|
| 1–2 bedroom flat or small terrace | 4–5 kW | £9,500–£12,500 |
| 2–3 bedroom terrace or semi | 5–7 kW | £10,500–£13,500 |
| 3 bedroom semi or small detached | 6–9 kW | £12,000–£15,500 |
| 4 bedroom detached | 8–12 kW | £14,000–£18,000 |
| 5+ bedroom or larger older house | 11–16 kW | £16,500–£22,500 |
Installed, inc VAT: unit, cylinder, controls, minor pipework and commissioning. In Scotland, Home Energy Scotland grants of up to £7,500 and interest-free loans may reduce the cost.
How long is the heating season in Dumbarton?
On the shortest day Dumbarton gets only about 6 hours 57 minutes of daylight, with the sun around 11° up at noon. Long Scottish winters mean the heat pump runs for much of the year, so careful sizing, good controls and correctly sized radiators make a real difference.
How installation works in Dumbarton
- Send your postcode and a few details, or use the guide price tool.
- A surveyor visits your Dumbarton 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 Dumbarton: questions
Do you cover Alexandria as well as Dumbarton?
Yes. We arrange surveys and installation in Alexandria, which is about 3 miles north of Dumbarton, and across Glasgow and Dunbartonshire.
How soon can you survey a home in Dumbarton?
Survey dates depend on how busy installers are in Glasgow and Dunbartonshire. We offer the next available dates when you enquire and confirm them in writing.
Can you service a heat pump in Dumbarton that someone else installed?
Yes. We arrange servicing and repairs for most air source heat pumps in Dumbarton, whoever fitted them. Tell us the make and model when you book.
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.
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.