Air conditioning for extensions and kitchen-diners in Truro
For a kitchen-diner in Truro, we place the indoor unit clear of the hob and plan the outdoor unit at the rear. In the South West, a system that heats well through damp winters is often as valuable as summer cooling.
In Truro, a side wall of a single-storey extension is usually the neatest place for the indoor unit. Truro is one of the main towns we cover in Cornwall, alongside Redruth and Falmouth. Homes in TR1 are all within our coverage.
Prices in Truro
For Truro, expect roughly £1,450 to £4,450 per space, VAT included, adjusted for typical South West England rates. It sits near the middle of UK prices. Concealed pipework, access equipment for high walls and any electrical work are what push prices towards the upper figure. On our South West England figures, the Large single option (one 5–7 kW unit for a large glazed space) is about £2,050–£2,850.
Single unit
One 3.5–5 kW unit for a medium extension.
Large single
One 5–7 kW unit for a large glazed space.
Twin units
Two indoor units on a multi-split for long or L-shaped spaces.
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
For most houses in Truro, the outdoor unit is permitted development if it passes the MCS 020(a) noise check (37 dB(A) or less at the nearest neighbouring window) and stays within the size and number limits. We run that check on survey.
The survey
A survey in Truro 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. 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.
What is included
Included with air conditioning for extensions and kitchen-diners in Truro:
- Free survey with glazing and roof heat-gain check
- Placement clear of the hob and oven
- Handover of the remote or app
- Pressure test, vacuum and commissioning
- Hidden routes during the build, or neat surface routes after
Nearby
Nearby, we also cover Falmouth (8 miles), Redruth (8 miles) and St Austell (13 miles). See all services in Truro or air conditioning for extensions and kitchen-diners across Cornwall.

