Air conditioning for extensions and kitchen-diners in Cheltenham
Damp South West winters make the dehumidifying side of a heat pump almost as useful as its cooling. An extension in Cheltenham with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon.
In Cheltenham, a side wall of a single-storey extension is usually the neatest place for the indoor unit. Cheltenham is about 7 miles from Gloucester and falls within our Gloucestershire coverage. Coverage includes GL50 and GL52.
Prices in Cheltenham
For Cheltenham, expect roughly £1,450 to £4,450 per space, VAT included, adjusted for typical South West England rates. That is close to the UK middle for this kind of work. Concealed pipework, access equipment for high walls and any electrical work are what push prices towards the upper figure. Typical Large single work (one 5–7 kW unit for a large glazed space) lands around £2,050–£2,850 in this area.
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 Cheltenham, 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
We book surveys in Cheltenham at a time that suits you, including early evenings by arrangement, and send the written quote afterwards. On a survey in Cheltenham 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.
What is included
What a job in Cheltenham covers:
- Hidden routes during the build, or neat surface routes after
- Pressure test, vacuum and commissioning
- Free survey with glazing and roof heat-gain check
- Handover of the remote or app
- One or two units sized for the whole space
Nearby
Close to Cheltenham, our coverage also includes Gloucester (7 miles), Stroud (12 miles) and Evesham (14 miles). See all services in Cheltenham or air conditioning for extensions and kitchen-diners across Gloucestershire.