Air conditioning for extensions and kitchen-diners in Potters Bar
An extension in Potters Bar with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon. Low rainfall and long summer days in the East of England make south-facing rooms the first to overheat.
For a kitchen-diner in Potters Bar, we place the indoor unit clear of the hob and plan the outdoor unit at the rear. Potters Bar sits around 10 miles from Watford, inside our Hertfordshire area. We cover EN6 and the streets around them.
Prices in Potters Bar
For Potters Bar, expect roughly £1,595 to £4,995 per space, VAT included, adjusted for typical East of England rates. Prices here sit above the national middle, reflecting East of England labour rates and parking and access costs. 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. As an example, the Large single option (one 5–7 kW unit for a large glazed space) would typically be £2,295–£3,195 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
In England, most houses can have an outdoor unit under permitted development if it is no larger than 1.5 m³, meets the MCS 020(a) noise limit of 37 dB(A) at the nearest neighbour's window, and there are no more than two on a detached house or one on other houses. Listed buildings need consent.
The survey
A survey in Potters Bar 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. We book surveys in Potters Bar at a time that suits you, including early evenings by arrangement, and send the written quote afterwards.
What is included
Included with air conditioning for extensions and kitchen-diners in Potters Bar:
- Handover of the remote or app
- Hidden routes during the build, or neat surface routes after
- Placement clear of the hob and oven
- Pressure test, vacuum and commissioning
- One or two units sized for the whole space
Nearby
If you are just outside Potters Bar, we also work in Hadley Wood (2 miles), Barnet (3 miles) and Enfield (5 miles). See all services in Potters Bar or air conditioning for extensions and kitchen-diners across Hertfordshire.

