Repairs and problems
Bathroom extractor fan not clearing steam
The short answer
A fan that spins but does not clear the room is usually a duct problem, not a motor problem.
Likely causes
Point 1
Long flexible ducting with sagging loops can reduce actual airflow to a fraction of the fan's rated figure.
Point 2
External grilles clog with dust and cobwebs and are the easiest thing to check first.
Common mistakes to avoid
Long flexible ducting with sagging loops can reduce actual airflow to a fraction of the fan's rated figure.
Common questions
How do I test it?
Hold a sheet of tissue to the grille, it should hold firmly, not flutter.
Should the fan run with the light?
Light-linked with an overrun is the most common and most effective arrangement.
Want this scoped properly before you commit?
We look at the room, check the services, and put the scope in writing so you can compare like with like.