Air conditioning for extensions and kitchen-diners in Thamesmead
The urban heat island effect means London bedrooms can stay uncomfortably warm on summer nights. In Thamesmead, a side wall of a single-storey extension is usually the neatest place for the indoor unit.
For a kitchen-diner in Thamesmead, we place the indoor unit clear of the hob and plan the outdoor unit at the rear. Our London coverage takes in Thamesmead, about 11 miles from central London. We cover SE2 and SE28 and the streets around them.
Prices in Thamesmead
Budget around £1,895–£5,845 per space including VAT for air conditioning for extensions and kitchen-diners in and around Thamesmead. Prices here sit above the national middle, reflecting London labour rates and parking and access costs. What moves a quote in Thamesmead up or down is mostly pipe length, how high the outdoor unit goes, and whether a new electrical circuit is needed. As an example, the Large single option (one 5–7 kW unit for a large glazed space) would typically be £2,695–£3,745 here.
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
A survey in Thamesmead 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. 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.
What is included
Every job in Thamesmead includes:
- 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
- Pressure test, vacuum and commissioning
- Free survey with glazing and roof heat-gain check
Nearby
Close to Thamesmead, our coverage also includes Barking (3 miles), Welling (3 miles) and Becontree (3 miles). See all services in Thamesmead or air conditioning for extensions and kitchen-diners across London.