Air conditioning for extensions and kitchen-diners in Carlisle
In Carlisle, a side wall of a single-storey extension is usually the neatest place for the indoor unit. Milder summers in the North West mean designing for winter comfort as much as for a heatwave.
An extension in Carlisle with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon. As well as Carlisle itself, our Cumbria coverage takes in Barrow-in-Furness, Kendal and the towns around them. Postcode districts we cover here include CA1.
Prices in Carlisle
Our North West England guide price for air conditioning for extensions and kitchen-diners is £1,395–£4,245 per space, VAT included. That sits a little below the UK middle, reflecting typical North West England labour rates. What moves a quote in Carlisle up or down is mostly pipe length, how high the outdoor unit goes, and whether a new electrical circuit is needed. On our North West England figures, the Large single option (one 5–7 kW unit for a large glazed space) is about £1,945–£2,695.
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
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. 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
Here is what is included on every job in Carlisle:
- Pressure test, vacuum and commissioning
- Free survey with glazing and roof heat-gain check
- Hidden routes during the build, or neat surface routes after
- Handover of the remote or app
- One or two units sized for the whole space
Nearby
If you are just outside Carlisle, we also work in Penrith (17 miles), Keswick (22 miles) and Maryport (25 miles). See all services in Carlisle or air conditioning for extensions and kitchen-diners across Cumbria.