Air conditioning for extensions and kitchen-diners in Welling
In Welling, 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 Welling, we place the indoor unit clear of the hob and plan the outdoor unit at the rear. Our London coverage takes in Welling, about 10 miles from central London. That includes the DA16 postcode district.
Prices in Welling
For Welling, expect roughly £1,895 to £5,845 per space, VAT included, adjusted for typical London rates. That is above the UK middle, mainly because labour and access cost more in London. 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 Welling (one 5–7 kW unit for a large glazed space) usually comes to about £2,695–£3,745.
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 Welling, 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
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. At the survey we look at how each room is used, where the sun hits it and how the pipes can reach the outside wall, then put it all in a written quote.
What is included
Every job in Welling includes:
- Free survey with glazing and roof heat-gain check
- One or two units sized for the whole space
- Handover of the remote or app
- Hidden routes during the build, or neat surface routes after
- Pressure test, vacuum and commissioning
Nearby
If you are just outside Welling, we also work in Bexley (2 miles), Eltham (3 miles) and Thamesmead (3 miles). See all services in Welling or air conditioning for extensions and kitchen-diners across London.