Air conditioning for extensions and kitchen-diners in Oxford
The South East sees some of the UK's warmest summer days, and south-facing rooms and conservatories feel it first. For a kitchen-diner in Oxford, we place the indoor unit clear of the hob and plan the outdoor unit at the rear.
In Oxford, a side wall of a single-storey extension is usually the neatest place for the indoor unit. We cover Oxford and the rest of Oxfordshire, including Banbury and Abingdon. That includes the OX1 postcode district.
Prices in Oxford
Guide prices around Oxford run from £1,745 to £5,445 per space including VAT. Prices here sit above the national middle, reflecting South East England labour rates and parking and access costs. The biggest variables are the pipe route, access for the outdoor unit and the state of the consumer unit, all of which the survey settles. On our South East England figures, the Large single option (one 5–7 kW unit for a large glazed space) is about £2,495–£3,495.
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
On a survey in Oxford the engineer looks at room size, glazing, the route for pipes and drains, the electrics and where the outdoor unit can sit quietly, then the written quote follows. Surveys in Oxford cover heat gain, pipe routes, electrics, access and noise to the nearest neighbour, so surprises on the day are rare.
What is included
What a job in Oxford covers:
- Pressure test, vacuum and commissioning
- Placement clear of the hob and oven
- One or two units sized for the whole space
- Hidden routes during the build, or neat surface routes after
- Free survey with glazing and roof heat-gain check
Nearby
We also cover Abingdon (6 miles), Didcot (10 miles) and Witney (10 miles). See all services in Oxford or air conditioning for extensions and kitchen-diners across Oxfordshire.