Ducted air conditioning in Caernarfon
Exposed coastal sites in North Wales call for outdoor units placed out of the wind and salt spray where possible. In an older house in Caernarfon, the loft and any existing bulkheads decide whether a ducted layout will work.
Ducted systems suit Caernarfon loft conversions and new extensions where ceilings are being boarded anyway. Caernarfon sits around 8 miles from Bangor, Gwynedd, inside our Gwynedd area. Postcode districts we cover here include LL55.
Prices in Caernarfon
For Caernarfon, expect roughly £5,095 to £14,045 per system, VAT included, adjusted for typical North Wales rates. That sits a little below the UK middle, reflecting typical North Wales labour rates. Longer or hidden pipe runs, high-level brackets and electrical upgrades are the usual reasons a quote lands at the top of the range. Typical Zoned work (motorised dampers or two units for separate floors or room groups) lands around £6,995–£10,295 in this area.
Single zone
One ducted unit serving two or three rooms from a loft or void.
Zoned
Motorised dampers or two units for separate floors or room groups.
Whole home
Multiple ducted units with linear slot diffusers and smart control.
Guide prices show VAT at 20%. HMRC treats most fixed air conditioners and air-to-air heat pumps installed in homes as energy-saving materials, zero-rated until 31 March 2027 when we supply and fit them. If your installation qualifies, your quote shows 0% VAT and a lower price. Servicing, repairs, cleaning and controls are charged at 20%.
Planning and permissions
Wales removed its old 3 m boundary rule on 1 June 2026, so most houses in Caernarfon can now have an outdoor unit under permitted development if it meets the MCS 020a noise condition. Listed buildings still need consent, and conservation areas have extra restrictions.
The survey
The free survey is where the real price is set: room measurements, pipe and drain routes, electrical checks and the outdoor unit position, all written into your quote. A survey in Caernarfon usually takes one to two hours. We measure the rooms, check the walls and the consumer unit, agree the outdoor unit position with you and photograph the pipe routes.
What is included
Every job in Caernarfon includes:
- Access hatch and condensate route planned in
- Concealed fan unit and outdoor unit sized to the zone
- Insulated ductwork, plenums and grilles
- Commissioning with airflow balancing per grille
- Free survey with ceiling-void and loft inspection
Nearby
Neighbouring places we cover include Llangefni (8 miles), Bangor, Gwynedd (8 miles) and Porthmadog (16 miles). See all services in Caernarfon or ducted air conditioning across Gwynedd.