- Postcode districts
- PA4
- Nearby
- Clydebank, Erskine and Paisley
- Guide price
- £240–£600
- Typical time on site
- half a day
- Water
- Soft across most of Renfrewshire and Inverclyde
- Survey
- Free, at your home
What does a bathroom extractor fan cost in Renfrew?
As a guide, budget £240 to £600 including VAT for a bathroom extractor fan in Renfrew; your written quote will pin it down. Prices in Scotland run at about 4% below the national guide, mainly because of labour rates. The figure depends on the size of the room, whether anything moves, and the products you pick.
Extractor fan
- Fan with timer or humidistat
Inline fan
- Ducting to a roof or soffit vent
Continuous extract
- Good for windowless rooms
Guide prices for Renfrew including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Renfrew
In Renfrew we cover PA4; we also cover Clydebank, 2.1 miles away, and Erskine.
Being a smaller town does not change how we work in Renfrew: free survey, written quote, one team. If your Renfrew bathroom has black mould on the ceiling or silicone, the fan and its duct are the first things we check. If your Renfrew home is listed or in a period terrace, a fan ducted through the loft to a roof vent can avoid a new hole in the front wall, though consent may still apply.
Supplies across most of Renfrewshire and Inverclyde are soft. Even so, condensation is the bigger problem in any bathroom, and a properly sized extractor is what deals with it. Hardness varies street by street, so check the figure for your postcode with your water supplier.
What the job includes
- A fan chosen to meet the bathroom extract rate: 15 l/s intermittent or 8 l/s continuous
- Core-drilling through the wall, or ducting through the loft to a roof or soffit vent
- Rigid or semi-rigid ducting kept short and straight, and insulated where it crosses a cold loft
- Making good around the fan and checking that it extracts properly at the grille
Decisions to make first
Axial, centrifugal or inline
Axial fans suit short, straight runs; centrifugal fans cope better with longer ducts; inline fans sit in the loft and are the quietest in the room.
Replacement air
A fan needs air to replace what it removes, so leave a gap of around 10 mm under the door or fit a door grille. A sealed room starves the fan.
Rules that apply in Scotland
In Scotland, the Technical Handbook also uses 15 l/s extract for a bathroom. A replacement fan rarely needs a building warrant, but forming a new bathroom may.

