Air conditioning for extensions and kitchen-diners in New Milton
In New Milton, a side wall of a single-storey extension is usually the neatest place for the indoor unit. Summers in the South East are among the warmest in the country, so cooling often comes first, with efficient winter heating as a bonus.
An extension in New Milton with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon. We cover New Milton as part of Hampshire, roughly 15 miles from Southampton. Postcode districts we cover here include BH25.
Prices in New Milton
For New Milton, expect roughly £1,745 to £5,445 per space, VAT included, adjusted for typical South East England rates. That is above the UK middle, mainly because labour and access cost more in South East England. Quotes move with the length of the pipe run, where the outdoor unit can sit and how much electrical work the job needs. On our South East England figures, the Large single option (one 5–7 kW unit for a large glazed space) is about £2,495–£3,495.
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 New Milton, 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
We book surveys in New Milton at a time that suits you, including early evenings by arrangement, and send the written quote afterwards. A survey in New Milton 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.
What is included
Here is what is included on every job in New Milton:
- Hidden routes during the build, or neat surface routes after
- Free survey with glazing and roof heat-gain check
- Pressure test, vacuum and commissioning
- Handover of the remote or app
- One or two units sized for the whole space
Nearby
Neighbouring places we cover include Christchurch (5 miles), Bournemouth (10 miles) and Ferndown (11 miles). See all services in New Milton or air conditioning for extensions and kitchen-diners across Hampshire.