Air conditioning for extensions and kitchen-diners in March
For a kitchen-diner in March, we place the indoor unit clear of the hob and plan the outdoor unit at the rear. Bright summers in the East of England mean solar gain through glass is usually the biggest load to design for.
In March, a side wall of a single-storey extension is usually the neatest place for the indoor unit. Our Cambridgeshire coverage takes in March, about 14 miles from Peterborough. Postcode districts we cover here include PE15.
Prices in March
Budget around £1,595–£4,995 per space including VAT for air conditioning for extensions and kitchen-diners in and around March. That is above the UK middle, mainly because labour and access cost more in the East of England. What moves a quote in March 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 March (one 5–7 kW unit for a large glazed space) usually comes to about £2,295–£3,195.
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. A survey in March 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 with air conditioning for extensions and kitchen-diners in March:
- Free survey with glazing and roof heat-gain check
- Hidden routes during the build, or neat surface routes after
- Pressure test, vacuum and commissioning
- Placement clear of the hob and oven
- Handover of the remote or app
Nearby
Nearby, we also cover Wisbech (8 miles), Peterborough (14 miles) and King's Lynn (19 miles). See all services in March or air conditioning for extensions and kitchen-diners across Cambridgeshire.