Air conditioning for extensions and kitchen-diners in Hitchin
For a kitchen-diner in Hitchin, we place the indoor unit clear of the hob and plan the outdoor unit at the rear. Bright summers in the East of England mean solar gain through glass is usually the biggest load to design for.
An extension in Hitchin with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon. We cover Hitchin as part of Hertfordshire, roughly 21 miles from Watford. That includes the SG4 and SG5 postcode districts.
Prices in Hitchin
For Hitchin, expect roughly £1,595 to £4,995 per space, VAT included, adjusted for typical East of England rates. The East of England is one of the dearer parts of the UK for trades, which shows in the range. What moves a quote in Hitchin up or down is mostly pipe length, how high the outdoor unit goes, and whether a new electrical circuit is needed. On our East of England figures, the Large single option (one 5–7 kW unit for a large glazed space) is about £2,295–£3,195.
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 Hitchin 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 Hitchin cover heat gain, pipe routes, electrics, access and noise to the nearest neighbour, so surprises on the day are rare.
What is included
Every job in Hitchin includes:
- Free survey with glazing and roof heat-gain check
- Placement clear of the hob and oven
- Hidden routes during the build, or neat surface routes after
- One or two units sized for the whole space
- Pressure test, vacuum and commissioning
Nearby
If you are just outside Hitchin, we also work in Letchworth Garden City (3 miles), Stevenage (5 miles) and Luton (7 miles). See all services in Hitchin or air conditioning for extensions and kitchen-diners across Hertfordshire.