Air conditioning for extensions and kitchen-diners in Catford
In Catford, a side wall of a single-storey extension is usually the neatest place for the indoor unit. In London, heat soaks into brick and concrete during the day and comes back out at night, which is when it is hardest to sleep.
For a kitchen-diner in Catford, we place the indoor unit clear of the hob and plan the outdoor unit at the rear. Catford lies roughly 6 miles from central London, and we cover it as part of London. That includes the SE6 postcode district.
Prices in Catford
In London, our guide range for air conditioning for extensions and kitchen-diners is £1,895–£5,845 per space, including VAT. Prices here sit above the national middle, reflecting London labour rates and parking and access costs. Longer or hidden pipe runs, high-level brackets and electrical upgrades are the usual reasons a quote lands at the top of the range. 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
On a survey in Catford 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. We book surveys in Catford at a time that suits you, including early evenings by arrangement, and send the written quote afterwards.
What is included
Here is what is included on every job in Catford:
- Handover of the remote or app
- Hidden routes during the build, or neat surface routes after
- Free survey with glazing and roof heat-gain check
- Pressure test, vacuum and commissioning
- Placement clear of the hob and oven
Nearby
If you are just outside Catford, we also work in Blackheath (2 miles), Greenwich (2 miles) and Beckenham (2 miles). See all services in Catford or air conditioning for extensions and kitchen-diners across London.