What does a bathroom extractor fan cost in Renfrewshire and Inverclyde?
Our guide range in Renfrewshire and Inverclyde is £240–£600 including VAT. Prices in Renfrewshire and Inverclyde run at about 4% below the UK guide, based on Scotland labour rates.
Extractor fan
- Ducted to outside
Inline fan
- Grille in the ceiling
Continuous extract
- Low-energy fan running all the time
Guide prices for Renfrewshire & Inverclyde including VAT. Your itemised written quote after the free survey is the price that counts.
Which towns do we cover in Renfrewshire and Inverclyde?
Water across much of Renfrewshire and Inverclyde is 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. In Paisley flats, a new vent through an outside wall may need agreement from the other owners or the factor, so we raise it at the survey.
What the job includes
- A fan chosen to meet the bathroom extract rate: 15 l/s intermittent or 8 l/s continuous
- Making good around the fan and checking that it extracts properly at the grille
- Core-drilling through the wall, or ducting through the loft to a roof or soffit vent
- A backdraught shutter and external grille, so cold air does not blow back in
- Rigid or semi-rigid ducting kept short and straight, and insulated where it crosses a cold loft
- Wiring by a qualified electrician, with an isolator outside the room and RCD protection
Decisions to make first
Wall or ceiling
A wall fan on an outside wall is the simplest. A ceiling fan over the shower takes steam away at source but needs ducting through the loft.
Timer or humidistat
A timer keeps the fan running after the light goes off. A humidistat starts it whenever moisture rises, which suits rooms where people forget.
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.
Noise
Compare the stated noise level in decibels. Inline fans and low-speed continuous fans are much quieter in the room than budget axial fans.
Rules that apply in Scotland
A bathroom needs extract ventilation when it is newly formed, and on a refit an existing fan should not be replaced with a less effective one. The fan and its wiring must meet BS 7671 for the zone it sits in, on a circuit with 30 mA RCD protection. In a flat, the title deeds often require the other owners' agreement for a new extract vent, and in a listed building a new opening through an external wall can need listed building consent.
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.