Air conditioning for extensions and kitchen-diners in Dunstable
An extension in Dunstable with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon. Long sunny spells in the East of England put conservatories and top-floor rooms under real pressure.
In Dunstable, a side wall of a single-storey extension is usually the neatest place for the indoor unit. Dunstable is about 5 miles from Luton and falls within our Bedfordshire coverage. Homes in LU6 are all within our coverage.
Prices in Dunstable
Air conditioning for extensions and kitchen-diners in Dunstable typically comes in at £1,595–£4,995 per space including VAT, based on East of England rates. That is above the UK middle, mainly because labour and access cost more in the East of England. What moves a quote in Dunstable up or down is mostly pipe length, how high the outdoor unit goes, and whether a new electrical circuit is needed. Typical Large single work (one 5–7 kW unit for a large glazed space) lands around £2,295–£3,195 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
Since 29 May 2025, England's permitted development rules allow larger outdoor units (up to 1.5 m³) and no longer require a 1 m gap to the boundary, provided the MCS 020(a) noise check is met. Listed buildings and pitched-roof installs still need permission.
The survey
We book surveys in Dunstable at a time that suits you, including early evenings by arrangement, and send the written quote afterwards. 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
Every job in Dunstable includes:
- Placement clear of the hob and oven
- Hidden routes during the build, or neat surface routes after
- One or two units sized for the whole space
- Handover of the remote or app
- Pressure test, vacuum and commissioning
Nearby
Neighbouring places we cover include Houghton Regis (1 mile), Luton (5 miles) and Leighton Buzzard (6 miles). See all services in Dunstable or air conditioning for extensions and kitchen-diners across Bedfordshire.