Air conditioning for extensions and kitchen-diners in Guildford
In the South East, loft rooms and glazed extensions can climb well above the outside temperature on a sunny afternoon. In Guildford, a side wall of a single-storey extension is usually the neatest place for the indoor unit.
For a kitchen-diner in Guildford, we place the indoor unit clear of the hob and plan the outdoor unit at the rear. We cover Guildford as part of Surrey, roughly 6 miles from Woking. That includes the GU1 postcode district.
Prices in Guildford
Guide prices around Guildford run from £1,745 to £5,445 per space including VAT. Prices here sit above the national middle, reflecting South East England labour rates and parking and access costs. The biggest variables are the pipe route, access for the outdoor unit and the state of the consumer unit, all of which the survey settles. As an example, the Large single option (one 5–7 kW unit for a large glazed space) would typically be £2,495–£3,495 here.
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
In England, most houses can have an outdoor unit under permitted development if it is no larger than 1.5 m³, meets the MCS 020(a) noise limit of 37 dB(A) at the nearest neighbour's window, and there are no more than two on a detached house or one on other houses. Listed buildings need consent.
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. We book surveys in Guildford at a time that suits you, including early evenings by arrangement, and send the written quote afterwards.
What is included
Included as standard in Guildford:
- Pressure test, vacuum and commissioning
- Hidden routes during the build, or neat surface routes after
- Handover of the remote or app
- Free survey with glazing and roof heat-gain check
- One or two units sized for the whole space
Nearby
Close to Guildford, our coverage also includes Godalming (4 miles), Woking (6 miles) and Aldershot (8 miles). See all services in Guildford or air conditioning for extensions and kitchen-diners across Surrey.