Air conditioning for extensions and kitchen-diners across Cumbria
For a kitchen-diner in Carlisle, we place the indoor unit clear of the hob and plan the outdoor unit at the rear. In Carlisle, a side wall of a single-storey extension is usually the neatest place for the indoor unit. Damp North West weather makes the dehumidifying mode of a modern split system genuinely useful for much of the year.
Prices in Cumbria
For Cumbria, expect roughly £1,395 to £4,245 per space, VAT included, adjusted for typical North West England rates. That sits a little below the UK middle, reflecting typical North West England labour rates. Concealed pipework, access equipment for high walls and any electrical work are what push prices towards the upper figure. For reference, the Large single option in Cumbria (one 5–7 kW unit for a large glazed space) usually comes to 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
For most houses in Cumbria, 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
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
Included with air conditioning for extensions and kitchen-diners across Cumbria:
- Placement clear of the hob and oven
- Hidden routes during the build, or neat surface routes after
- Handover of the remote or app
- Free survey with glazing and roof heat-gain check
- One or two units sized for the whole space
- Pressure test, vacuum and commissioning
Towns in Cumbria
Pick your town for local details, or see every service in Cumbria.

