downstairs loo extractor fan - whistle and noise +++ Help and information on all topics relating to your central heating, air conditioning and ventilation issues.

[pocketpunk]

Hello

Had an extension completed in April and all is fab.

Only prob is that just recently the extractor fan is making a right DIN....whistles and rattles when its triggered. Its not the wind cos when its off its quiet as a mouse.....

what could it be...i dont want to call anyone out if we can sort it ourselves

thanks