Extractor fans & ventilation in Lanarkshire

What does a bathroom extractor fan cost in Lanarkshire?

Our guide range in Lanarkshire is £240–£600 including VAT. Prices in Lanarkshire run at about 4% below the UK guide, based on Scotland labour rates.

Guide prices for Lanarkshire including VAT. Your itemised written quote after the free survey is the price that counts.

Which towns do we cover in Lanarkshire?

• East Kilbride
• Hamilton
• Cumbernauld
• Coatbridge
• Airdrie
• Motherwell
• Rutherglen
• Cambuslang
• Wishaw
• Bellshill
• Blantyre
• Larkhall

Water across much of Lanarkshire 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. For windowless bathrooms in East Kilbride homes, continuous extract that boosts on humidity often works better than a fan tied to the light switch.

What the job includes

• Making good around the fan and checking that it extracts properly at the grille
• 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
• A check of the room, any existing fan or vent, and the shortest route to the outside
• Run-on timer, humidistat or light-linked switching set up to suit how the room is used
• Wiring by a qualified electrician, with an isolator outside the room and RCD protection

Decisions to make first

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.

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.

Intermittent or continuous

An intermittent fan runs during and after use. A continuous fan runs quietly all the time at a low rate and boosts when humidity rises.

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.

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.