Air conditioning for extensions and kitchen-diners in Southall
London's dense streets hold heat overnight, so top-floor flats and loft rooms often stay warm long after sunset. An extension in Southall with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon.
In Southall, a side wall of a single-storey extension is usually the neatest place for the indoor unit. Southall lies roughly 11 miles from central London, and we cover it as part of London. Postcode districts we cover here include UB1.
Prices in Southall
For Southall, expect roughly £1,895 to £5,845 per space, VAT included, adjusted for typical London rates. Prices here sit above the national middle, reflecting London labour rates and parking and access costs. 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 Large single work (one 5–7 kW unit for a large glazed space) lands around £2,695–£3,745 in this area.
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
We book surveys in Southall at a time that suits you, including early evenings by arrangement, and send the written quote afterwards. On a survey in Southall 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 Southall:
- Placement clear of the hob and oven
- Handover of the remote or app
- One or two units sized for the whole space
- Pressure test, vacuum and commissioning
- Free survey with glazing and roof heat-gain check
Nearby
Neighbouring places we cover include Greenford (2 miles), Heston (2 miles) and Hayes (2 miles). See all services in Southall or air conditioning for extensions and kitchen-diners across London.