Air conditioning for extensions and kitchen-diners in Ashton-under-Lyne
Damp North West weather makes the dehumidifying mode of a modern split system genuinely useful for much of the year. An extension in Ashton-under-Lyne with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon.
In Ashton-under-Lyne, a side wall of a single-storey extension is usually the neatest place for the indoor unit. Ashton-under-Lyne lies roughly 6 miles from Manchester, and we cover it as part of Greater Manchester. Coverage includes OL7.
Prices in Ashton-under-Lyne
Air conditioning for extensions and kitchen-diners in Ashton-under-Lyne typically comes in at £1,395–£4,245 per space including VAT, based on North West England rates. That sits a little below the UK middle, reflecting typical North West England labour rates. Quotes move with the length of the pipe run, where the outdoor unit can sit and how much electrical work the job needs. Typical Large single work (one 5–7 kW unit for a large glazed space) lands around £1,945–£2,695 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
At the survey we look at how each room is used, where the sun hits it and how the pipes can reach the outside wall, then put it all in a written quote. On a survey in Ashton-under-Lyne 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
Included as standard in Ashton-under-Lyne:
- Placement clear of the hob and oven
- Hidden routes during the build, or neat surface routes after
- Free survey with glazing and roof heat-gain check
- Pressure test, vacuum and commissioning
- One or two units sized for the whole space
Nearby
If you are just outside Ashton-under-Lyne, we also work in Dukinfield (1 mile), Stalybridge (2 miles) and Droylsden (2 miles). See all services in Ashton-under-Lyne or air conditioning for extensions and kitchen-diners across Greater Manchester.