Air conditioning for extensions and kitchen-diners in Darton
In Darton, a side wall of a single-storey extension is usually the neatest place for the indoor unit. Across Yorkshire, an air-to-air system is a practical way to replace old electric heaters, with cooling for the hottest spells.
An extension in Darton with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon. We cover Darton as part of South Yorkshire, roughly 14 miles from Sheffield. That includes the S75 postcode district.
Prices in Darton
Guide prices around Darton run from £1,395 to £4,245 per space including VAT. Labour rates in Yorkshire and the Humber keep this slightly under the national middle. 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. For reference, the Large single option in Darton (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
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
We book surveys in Darton at a time that suits you, including early evenings by arrangement, and send the written quote afterwards. On a survey in Darton 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
Included with air conditioning for extensions and kitchen-diners in Darton:
- Placement clear of the hob and oven
- Pressure test, vacuum and commissioning
- Handover of the remote or app
- One or two units sized for the whole space
- Free survey with glazing and roof heat-gain check
Nearby
If you are just outside Darton, we also work in Barnsley (3 miles), Wakefield (7 miles) and Ossett (7 miles). See all services in Darton or air conditioning for extensions and kitchen-diners across South Yorkshire.

