Air conditioning for extensions and kitchen-diners in Sheffield
In Yorkshire, south-facing lofts and glazed extensions are where summer cooling makes the biggest difference. In Sheffield, a side wall of a single-storey extension is usually the neatest place for the indoor unit.
For a kitchen-diner in Sheffield, we place the indoor unit clear of the hob and plan the outdoor unit at the rear. As well as Sheffield itself, our South Yorkshire coverage takes in Rotherham, Doncaster and the towns around them. Coverage includes S1, S2, S3, S4, S5 and 3 more.
Prices in Sheffield
Budget around £1,395–£4,245 per space including VAT for air conditioning for extensions and kitchen-diners in and around Sheffield. It is a touch below the UK middle, as trade rates in Yorkshire and the Humber tend to be. What moves a quote in Sheffield up or down is mostly pipe length, how high the outdoor unit goes, and whether a new electrical circuit is needed. For reference, the Large single option in Sheffield (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
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
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. 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.
What is included
What a job in Sheffield covers:
- Hidden routes during the build, or neat surface routes after
- Free survey with glazing and roof heat-gain check
- Handover of the remote or app
- Pressure test, vacuum and commissioning
- One or two units sized for the whole space
Nearby
We also cover Burngreave (under a mile), Rotherham (6 miles) and Dronfield (6 miles). See all services in Sheffield or air conditioning for extensions and kitchen-diners across South Yorkshire.