Are you keeping the door/window open after showering and when washing/drying?
We have the same issue but it's our own fault as new bathroom but didn't think to run fan off separate switch.
I have two windows locked open a cracking.
The door stays closed during the day as one of the cats likes to jump on top of the shower
@Soul started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
Are you keeping the door/window open after showering and when washing/drying?
We have the same issue but it's our own fault as new bathroom but didn't think to run fan off separate switch.