Air conditioning for extensions and kitchen-diners in Farnham
In Farnham, a side wall of a single-storey extension is usually the neatest place for the indoor unit. In the South East, loft rooms and glazed extensions can climb well above the outside temperature on a sunny afternoon.
An extension in Farnham with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon. Farnham is about 13 miles from Woking and falls within our Surrey coverage. That includes the GU9 postcode district.
Prices in Farnham
Budget around £1,745–£5,445 per space including VAT for air conditioning for extensions and kitchen-diners in and around Farnham. South East England is one of the dearer parts of the UK for trades, which shows in the range. Quotes move with the length of the pipe run, where the outdoor unit can sit and how much electrical work the job needs. 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
England's rules let most houses fit an outdoor unit without a planning application, as long as the size, number and MCS 020(a) noise conditions are met. Flats, listed buildings and roof-mounted units are treated differently.
The survey
A survey in Farnham 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. Surveys in Farnham cover heat gain, pipe routes, electrics, access and noise to the nearest neighbour, so surprises on the day are rare.
What is included
Here is what is included on every job in Farnham:
- Handover of the remote or app
- Placement clear of the hob and oven
- Hidden routes during the build, or neat surface routes after
- Pressure test, vacuum and commissioning
- One or two units sized for the whole space
Nearby
Close to Farnham, our coverage also includes Aldershot (3 miles), Fleet (5 miles) and Farnborough (6 miles). See all services in Farnham or air conditioning for extensions and kitchen-diners across Surrey.