Air conditioning for extensions and kitchen-diners in Basingstoke
In Basingstoke, a side wall of a single-storey extension is usually the neatest place for the indoor unit. Hot spells reach the South East early, which makes spring the easiest time to arrange an installation.
An extension in Basingstoke with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon. Basingstoke sits around 28 miles from Southampton, inside our Hampshire area. That includes the RG21 postcode district.
Prices in Basingstoke
For Basingstoke, expect roughly £1,745 to £5,445 per space, VAT included, adjusted for typical South East England rates. That is above the UK middle, mainly because labour and access cost more in South East England. Quotes move with the length of the pipe run, where the outdoor unit can sit and how much electrical work the job needs. On our South East England figures, the Large single option (one 5–7 kW unit for a large glazed space) is about £2,495–£3,495.
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 Basingstoke, 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
Surveys in Basingstoke cover heat gain, pipe routes, electrics, access and noise to the nearest neighbour, so surprises on the day are rare. On a survey in Basingstoke the engineer looks at room size, glazing, the route for pipes and drains, the electrics and where the outdoor unit can sit quietly, then the written quote follows.
What is included
Here is what is included on every job in Basingstoke:
- Free survey with glazing and roof heat-gain check
- Handover of the remote or app
- Pressure test, vacuum and commissioning
- Hidden routes during the build, or neat surface routes after
- One or two units sized for the whole space
Nearby
Nearby, we also cover Fleet (11 miles), Thatcham (12 miles) and Farnham (13 miles). See all services in Basingstoke or air conditioning for extensions and kitchen-diners across Hampshire.