Air conditioning for extensions and kitchen-diners in Street
Coastal breezes help, but inland South West towns and glazed rooms still see uncomfortable peaks. An extension in Street with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon.
In Street, a side wall of a single-storey extension is usually the neatest place for the indoor unit. Our Somerset coverage takes in Street, about 17 miles from Taunton. Postcode districts we cover here include BA16.
Prices in Street
In South West England, our guide range for air conditioning for extensions and kitchen-diners is £1,450–£4,450 per space, including VAT. That is close to the UK middle for this kind of work. 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. On our South West England figures, the Large single option (one 5–7 kW unit for a large glazed space) is about £2,050–£2,850.
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
A survey in Street 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 Street 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 Street:
- One or two units sized for the whole space
- Placement clear of the hob and oven
- Hidden routes during the build, or neat surface routes after
- Pressure test, vacuum and commissioning
- Free survey with glazing and roof heat-gain check
Nearby
If you are just outside Street, we also work in Glastonbury (2 miles), Wells (7 miles) and Shepton Mallet (10 miles). See all services in Street or air conditioning for extensions and kitchen-diners across Somerset.