Air conditioning for extensions and kitchen-diners in Desborough
The East Midlands gets warm, dry summer spells, and loft conversions and top-floor bedrooms are where the heat builds. For a kitchen-diner in Desborough, we place the indoor unit clear of the hob and plan the outdoor unit at the rear.
An extension in Desborough with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon. Desborough sits around 13 miles from Northampton, inside our Northamptonshire area. That includes the NN14 postcode district.
Prices in Desborough
Budget around £1,395–£4,245 per space including VAT for air conditioning for extensions and kitchen-diners in and around Desborough. Labour rates in the East Midlands keep this slightly under the national middle. Quotes move with the length of the pipe run, where the outdoor unit can sit and how much electrical work the job needs. On our East Midlands figures, the Large single option (one 5–7 kW unit for a large glazed space) is about £1,945–£2,745.
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. A survey in Desborough usually takes one to two hours. We measure the rooms, check the walls and the consumer unit, agree the outdoor unit position with you and photograph the pipe routes.
What is included
Included as standard in Desborough:
- Pressure test, vacuum and commissioning
- 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
- Handover of the remote or app
Nearby
Nearby, we also cover Rothwell (2 miles), Market Harborough (5 miles) and Kettering (5 miles). See all services in Desborough or air conditioning for extensions and kitchen-diners across Northamptonshire.