Air conditioning for extensions and kitchen-diners in Rottingdean
The South East sees some of the UK's warmest summer days, and south-facing rooms and conservatories feel it first. In Rottingdean, a side wall of a single-storey extension is usually the neatest place for the indoor unit.
An extension in Rottingdean with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon. Rottingdean sits around 4 miles from Brighton, inside our East Sussex area. We cover BN2 and BN51 and the streets around them.
Prices in Rottingdean
Guide prices around Rottingdean 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. Quotes move with the length of the pipe run, where the outdoor unit can sit and how much electrical work the job needs. Typical Large single work (one 5–7 kW unit for a large glazed space) lands around £2,495–£3,495 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
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
We book surveys in Rottingdean at a time that suits you, including early evenings by arrangement, and send the written quote afterwards. A survey in Rottingdean 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
Here is what is included on every job in Rottingdean:
- Handover of the remote or app
- Free survey with glazing and roof heat-gain check
- Placement clear of the hob and oven
- One or two units sized for the whole space
- Pressure test, vacuum and commissioning
Nearby
If you are just outside Rottingdean, we also work in Brighton (4 miles), Hove (5 miles) and Seaford (8 miles). See all services in Rottingdean or air conditioning for extensions and kitchen-diners across East Sussex.