For some unknown reasons, my kitchen extractor fan makes some creepy noise, not sure what it is but it is very loud and very annoying, what can it be? has anyone got this problem before? my kitchen is over 10 yrs old, not sure who installed it.
Is there something obstructing the actual blades of the fan perhaps? The flexible ducting may have moved into contact with it, there may be some other part that has worked loose?