Air conditioning for extensions and kitchen-diners in Northolt
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 Northolt, we place the indoor unit clear of the hob and plan the outdoor unit at the rear.
An extension in Northolt with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon. Northolt is about 11 miles from central London and falls within our London coverage. Postcode districts we cover here include UB5.
Prices in Northolt
In London, our guide range for air conditioning for extensions and kitchen-diners is £1,895–£5,845 per space, including VAT. That is above the UK middle, mainly because labour and access cost more in London. Concealed pipework, access equipment for high walls and any electrical work are what push prices towards the upper figure. On our London figures, the Large single option (one 5–7 kW unit for a large glazed space) is 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 Northolt, 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
A survey in Northolt 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. Surveys in Northolt cover heat gain, pipe routes, electrics, access and noise to the nearest neighbour, so surprises on the day are rare.
What is included
Here is what is included on every job in Northolt:
- Pressure test, vacuum and commissioning
- Handover of the remote or app
- One or two units sized for the whole space
- Hidden routes during the build, or neat surface routes after
- Free survey with glazing and roof heat-gain check
Nearby
If you are just outside Northolt, we also work in Greenford (1 mile), Harrow (3 miles) and Southall (3 miles). See all services in Northolt or air conditioning for extensions and kitchen-diners across London.