Air conditioning for extensions and kitchen-diners in Johnstone
In central and southern Scotland, heat pump heating is usually the main reason to install, especially in homes on electric heating. In Johnstone, a side wall of a single-storey extension is usually the neatest place for the indoor unit.
An extension in Johnstone with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon. Johnstone sits around 3 miles from Paisley, inside our Renfrewshire and Inverclyde area. That includes the PA5 postcode district.
Prices in Johnstone
For Johnstone, expect roughly £1,345 to £4,095 per space, VAT included, adjusted for typical Central and Southern Scotland rates. That sits a little below the UK middle, reflecting typical Central and Southern Scotland labour rates. Quotes move with the length of the pipe run, where the outdoor unit can sit and how much electrical work the job needs. Typical Large single work (one 5–7 kW unit for a large glazed space) lands around £1,895–£2,595 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
Outdoor units on Scottish homes can often be installed without a planning application, but the conditions differ from England's, so we confirm the rules for your property at survey.
The survey
Surveys in Johnstone cover heat gain, pipe routes, electrics, access and noise to the nearest neighbour, so surprises on the day are rare. We book surveys in Johnstone at a time that suits you, including early evenings by arrangement, and send the written quote afterwards.
What is included
Here is what is included on every job in Johnstone:
- Placement clear of the hob and oven
- Hidden routes during the build, or neat surface routes after
- Handover of the remote or app
- Free survey with glazing and roof heat-gain check
- One or two units sized for the whole space
Nearby
If you are just outside Johnstone, we also work in Paisley (3 miles), Barrhead (5 miles) and Erskine (6 miles). See all services in Johnstone or air conditioning for extensions and kitchen-diners across Renfrewshire and Inverclyde.