Air conditioning for extensions and kitchen-diners in Renfrew
An extension in Renfrew with a roof lantern or large glazed doors can overheat quickly on a sunny afternoon. Long Scottish heating seasons make efficiency in cold, damp weather the thing to design around.
In Renfrew, a side wall of a single-storey extension is usually the neatest place for the indoor unit. Renfrew lies roughly 3 miles from Paisley, and we cover it as part of Renfrewshire and Inverclyde. Homes in PA4 are all within our coverage.
Prices in Renfrew
For Renfrew, expect roughly £1,345 to £4,095 per space, VAT included, adjusted for typical Central and Southern Scotland rates. It is a touch below the UK middle, as trade rates in Central and Southern Scotland 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. On our Central and Southern Scotland figures, the Large single option (one 5–7 kW unit for a large glazed space) is about £1,895–£2,595.
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
Scotland has its own permitted development rules for heat pumps and outdoor units, with stricter treatment of listed buildings and conservation areas. We check the current position for your property with you and, if needed, with the council.
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. A survey in Renfrew 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
Every job in Renfrew includes:
- Pressure test, vacuum and commissioning
- Free survey with glazing and roof heat-gain check
- One or two units sized for the whole space
- Hidden routes during the build, or neat surface routes after
- Placement clear of the hob and oven
Nearby
Nearby, we also cover Clydebank (2 miles), Erskine (3 miles) and Paisley (3 miles). See all services in Renfrew or air conditioning for extensions and kitchen-diners across Renfrewshire and Inverclyde.

