- Area
- Argyll and Bute
- Postcode district
- PA23
- Nation
- Scotland
- Guide price
- From £10,250 inc VAT
- Survey
- Free for installation enquiries
What to know about replacing a gas boiler with a heat pump in Dunoon
The question for a Dunoon home is rarely whether a heat pump can work, but what needs to change to make it work well: radiator sizes, pipework, controls and where the unit goes.
Installers in Dunoon take out the old boiler and flue and seal the wall opening as part of the job. Many gas-heated homes in Dunoon have a combi boiler in the kitchen, so the survey starts by finding the right place for a cylinder.
Moving from mains gas to a heat pump means finding cylinder space, deciding what happens to the gas supply and comparing running costs on realistic assumptions.
- Combi owners who can find space for a hot water cylinder
- Boilers that are old, unreliable or due for replacement
- System or regular boiler homes with an existing airing cupboard
What's included
- Heat pump cylinder, outdoor unit and weather compensation controls
- Capping of the gas pipe at the boiler position where you are giving up gas
- Free survey with heat loss calculation and cylinder siting
- Removal of the gas boiler, flue and any loft tanks
- System flush and radiator upgrades where the design calls for them
Households across Argyll and Bute moving off gas can have a survey in Dunoon that compares running costs on realistic assumptions.
Grants and rules for heat pumps in Scotland
The Boiler Upgrade Scheme does not apply in Scotland. Instead, homeowners in Dunoon 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.
Guide prices for replacing a gas boiler with a heat pump in Dunoon
Guide prices for Dunoon and the rest of Argyll and Bute are shown below, installed and inc VAT. We publish ranges rather than a single figure because design details move the price, and the written quote after survey fixes it.
| Home | Typical size | Installed guide price |
|---|---|---|
| 1–2 bedroom flat or small terrace | 4–5 kW | £10,250–£13,500 |
| 2–3 bedroom terrace or semi | 5–7 kW | £11,350–£14,600 |
| 3 bedroom semi or small detached | 6–9 kW | £12,950–£16,750 |
| 4 bedroom detached | 8–12 kW | £15,100–£19,450 |
| 5+ bedroom or larger older house | 11–16 kW | £17,800–£24,300 |
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.
Designing for Dunoon's winters
On the shortest day Dunoon 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.
The steps for replacing a gas boiler with a heat pump in Dunoon
- Send your postcode and a few details, or use the guide price tool.
- A surveyor visits your Dunoon 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.
Dunoon is in an area we cover by arrangement, so survey dates and any travel costs are confirmed individually in your quote.
Replacing a gas boiler with a heat pump in Dunoon: questions
Where would the outdoor unit go on a Dunoon 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 Dunoon home.
Can you service a heat pump in Dunoon that someone else installed?
Yes. We arrange servicing and repairs for most air source heat pumps in Dunoon, whoever fitted them. Tell us the make and model when you book.
Do I need new radiators for a heat pump in Dunoon?
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 Dunoon home gives a room-by-room list.
Can a heat pump replace a combi boiler?
Yes, but you need room for a hot water cylinder, because heat pumps store hot water rather than heating it on demand. Most homes find a space in a cupboard, utility room, garage or under the stairs, and compact or combined indoor units help where space is tight. The survey measures the options first, so you know where everything will go before you accept the quote.
Will my hot water run out with a heat pump?
Not if the cylinder is sized properly for your household. The survey asks how many people live in the home, how many bathrooms you have and whether you prefer baths or showers, then sizes the cylinder to suit. The heat pump reheats the cylinder on a schedule, often overnight and again during the day, and an immersion heater acts as a backup.