- Area
- Gwynedd
- Postcode district
- LL55
- Nation
- Wales
- Nearby
- Llangefni, Bangor (Gwynedd), Beaumaris
Homes in Caernarfon and the wider LL55 district can book a free survey for installation enquiries. Nearby we also cover Llangefni (about 8 miles north) and Bangor (Gwynedd).
Heat pump services in Caernarfon
All services in Caernarfon:
Grants and rules for heat pumps in Wales
In Wales 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; £2,500 for air-to-air). The MCS-certified installer named in your quote applies to Ofgem for you, and the grant comes off your Caernarfon quote.
Installing heat pumps is zero-rated for VAT across the UK until 31 March 2027. Wales has its own permitted development rules for air source heat pumps, so we check what applies to your property, including listed building and conservation-area constraints, at the survey.
Heat pump guide prices in Caernarfon
The ranges below are typical installed prices for homes in Gwynedd, including VAT. A survey sets the exact figure, because two similar-looking houses in Caernarfon can need quite different radiators and pipework.
| Home | Typical size | Installed guide price | After £7,500 grant |
|---|---|---|---|
| 1–2 bedroom flat or small terrace | 4–5 kW | £9,500–£12,500 | £2,000–£5,000 |
| 2–3 bedroom terrace or semi | 5–7 kW | £10,500–£13,500 | £3,000–£6,000 |
| 3 bedroom semi or small detached | 6–9 kW | £12,000–£15,500 | £4,500–£8,000 |
| 4 bedroom detached | 8–12 kW | £14,000–£18,000 | £6,500–£10,500 |
| 5+ bedroom or larger older house | 11–16 kW | £16,500–£22,500 | £9,000–£15,000 |
Installed, inc VAT: unit, cylinder, controls, minor pipework and commissioning.
Short winter days in Caernarfon and what they mean
Caernarfon has about 7 hours 32 minutes of daylight at midwinter and 16 hours 58 minutes at midsummer. That swing matters if you pair a heat pump with solar panels: summer generation can cover much of the hot water, winter generation far less.
Heat pumps in Caernarfon: questions
How long does a heat pump survey take in Caernarfon?
A home survey in Caernarfon 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.
Do you cover Llangefni as well as Caernarfon?
Yes. We arrange surveys and installation in Llangefni, which is about 8 miles north of Caernarfon, and across Gwynedd.
Can you service a heat pump in Caernarfon that someone else installed?
Yes. We arrange servicing and repairs for most air source heat pumps in Caernarfon, whoever fitted them. Tell us the make and model when you book.
What size heat pump does a Caernarfon home need?
It depends on the heat loss, not the postcode. As a rough guide, a 3 bedroom semi often needs 6–9 kW, but the room-by-room survey sets the actual size for your Caernarfon home.