Air conditioning for extensions and kitchen-diners across Merseyside
In Liverpool, a side wall of a single-storey extension is usually the neatest place for the indoor unit. For a kitchen-diner in Liverpool, we place the indoor unit clear of the hob and plan the outdoor unit at the rear. In the North West, heating efficiency is often the main benefit, with summer cooling a welcome bonus.
Prices in Merseyside
In North West England, our guide range for air conditioning for extensions and kitchen-diners is £1,395–£4,245 per space, including VAT. It is a touch below the UK middle, as trade rates in North West England tend to be. Concealed pipework, access equipment for high walls and any electrical work are what push prices towards the upper figure. 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
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
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. On a survey in Merseyside 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 with air conditioning for extensions and kitchen-diners across Merseyside:
- Handover of the remote or app
- One or two units sized for the whole space
- Hidden routes during the build, or neat surface routes after
- Free survey with glazing and roof heat-gain check
- Placement clear of the hob and oven
- Pressure test, vacuum and commissioning
Towns in Merseyside
Pick your town for local details, or see every service in Merseyside.