Air conditioning for extensions and kitchen-diners in Kirkby
Milder summers in the North West mean designing for winter comfort as much as for a heatwave. An extension in Kirkby with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon.
In Kirkby, a side wall of a single-storey extension is usually the neatest place for the indoor unit. Kirkby lies roughly 6 miles from Liverpool, and we cover it as part of Merseyside. Homes in L32 are all within our coverage.
Prices in Kirkby
Guide prices around Kirkby run from £1,395 to £4,245 per space including VAT. It is a touch below the UK middle, as trade rates in North West England tend to be. 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. Typical Large single work (one 5–7 kW unit for a large glazed space) lands around £1,945–£2,695 in this area.
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 Kirkby 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. On a survey in Kirkby the engineer looks at room size, glazing, the route for pipes and drains, the electrics and where the outdoor unit can sit quietly, then the written quote follows.
What is included
Included as standard in Kirkby:
- Pressure test, vacuum and commissioning
- Hidden routes during the build, or neat surface routes after
- Handover of the remote or app
- Placement clear of the hob and oven
- One or two units sized for the whole space
Nearby
If you are just outside Kirkby, we also work in Maghull (3 miles), Litherland (4 miles) and Prescot (5 miles). See all services in Kirkby or air conditioning for extensions and kitchen-diners across Merseyside.