Air conditioning for extensions and kitchen-diners in Hemel Hempstead
In Hemel Hempstead, a side wall of a single-storey extension is usually the neatest place for the indoor unit. Bright summers in the East of England mean solar gain through glass is usually the biggest load to design for.
An extension in Hemel Hempstead with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon. We cover Hemel Hempstead as part of Hertfordshire, roughly 7 miles from Watford. We cover HP3 and the streets around them.
Prices in Hemel Hempstead
Our East of England guide price for air conditioning for extensions and kitchen-diners is £1,595–£4,995 per space, VAT included. Prices here sit above the national middle, reflecting East of England labour rates and parking and access costs. Quotes move with the length of the pipe run, where the outdoor unit can sit and how much electrical work the job needs. 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
For most houses in Hemel Hempstead, 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
At the survey we look at how each room is used, where the sun hits it and how the pipes can reach the outside wall, then put it all in a written quote. The free survey is where the real price is set: room measurements, pipe and drain routes, electrical checks and the outdoor unit position, all written into your quote.
What is included
Included with air conditioning for extensions and kitchen-diners in Hemel Hempstead:
- Free survey with glazing and roof heat-gain check
- Placement clear of the hob and oven
- Handover of the remote or app
- Pressure test, vacuum and commissioning
- Hidden routes during the build, or neat surface routes after
Nearby
Close to Hemel Hempstead, our coverage also includes Berkhamsted (5 miles), St Albans (5 miles) and North Watford (6 miles). See all services in Hemel Hempstead or air conditioning for extensions and kitchen-diners across Hertfordshire.