Ventilation Aberdeen: Extractor Fans, PIV and MVHR

Aberdeen City had the highest rate of rising or penetrating damp of any Scottish council in 2022 to 2024: 8% of dwellings, against 3% nationally, according to the Scottish House Condition Survey. That is water getting in, which ventilation will not fix on its own. But once the leak is sorted, a damp wall dries out faster with good airflow.

Condensation is the other half of the problem, and here ventilation is the main fix.

Aberdeen at a glance

Homes that are flats: 50.2% of Aberdeen City households live in a flat, maisonette or apartment, against 34.4% across Scotland. Source
Damp: 8% of Aberdeen City dwellings had rising or penetrating damp in 2022 to 2024, the highest rate of any Scottish council and well above the 3% national average. Source

Start with fans that work

Kitchens and bathrooms produce most of the moisture in a home. An extractor fan that runs on for 15 minutes after the light goes off, ducted to the outside rather than into a loft, does more than any gadget. Many older fans in Aberdeen flats are too weak or blocked with fluff, so check the airflow before buying anything new.

Positive input ventilation

A PIV unit pushes filtered air into the home from the loft or a wall, nudging damp air out through gaps and vents. It suits houses with a loft and some flats with a wall-mounted version. It is cheaper than full heat recovery and easier to retrofit.

Heat recovery after insulation

When a home is insulated and draught-proofed, mechanical ventilation with heat recovery (MVHR) keeps fresh air coming in while saving most of the heat. Home Energy Scotland's energy efficiency funding covers insulation, so ask an adviser how ventilation fits into the plan before the work starts.

Aberdeen homes and what they need

Granite tenement flats

Many tenement flats have no proper extract in the bathroom, just a window. A quiet through-wall fan with a humidity sensor is a simple upgrade that tenants and owners both benefit from.

Postwar and later suburban semis

These houses usually have a loft, which makes a PIV unit easy to install. Check that the trickle vents in the windows are open as well.

Granite villas and larger detached houses

Large, partly used rooms can stay cold and damp. Background ventilation plus heating those rooms a little through the winter prevents mould on the outside walls.

Areas covered

Engineers who cover Aberdeen work across areas including Rosemount, Old Aberdeen, Torry, Ferryhill, Cults, Bieldside, Dyce, Bridge of Don, Kincorth and Westhill.

View Aberdeen on Google Maps

Questions people in Aberdeen ask

Do I need a building warrant for ventilation?

A like-for-like extractor fan does not normally need one, but a new whole-house system may. Your installer or Aberdeen City Council building standards can confirm.

Will a dehumidifier do the same job?

It helps in a single room, especially when drying washing indoors. It does not replace extract fans in the kitchen and bathroom, which remove moisture at the source.

Sources

Also nearby: Ventilation installation in Dundee, Ventilation installation in Edinburgh

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