Why does my bathroom stay humid even with the fan on?
Bathroom fans often make plenty of noise while failing to move air, leading people to spend months wiping condensation off walls while assuming the unit is broken. The actual problem is that the grille and fan blades accumulate buildup that blocks airflow, leaving bathrooms humid forever after showers until those hidden parts are thoroughly cleaned.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
- 1Wiping condensation off walls and mirrors manually
- 2Performing the tissue test to check suction
- 3Removing the cover and vacuuming or washing internal fan blades and grilles
- 4Run a small dehumidifier during and after showers
- 5Leave the bathroom door cracked open and use a fan pointing toward the hallway
In their words
Unedited, most upvoted first, each linked to the thread it came from.
“My bathroom always stayed humid forever after showers.”source ↗
“The fan made noise, so I assumed it was working.”source ↗
“Mine immediately fell on the floor.”source ↗
“I've spent months wiping condensation off walls and blaming the fan when apparently I had never actually cleaned the part of the fan that mattered.”source ↗
“one of our bathrooms has no fan or window for ventilation.”source ↗
“whats the best way to get some airflow in this bathroom?”source ↗
“Mine was technically running for years, meaning it successfully converted electricity into noise. Cleaned the grille and fan blades and suddenly it could actually hold a square of toilet paper.”source ↗
Where this came up
People with this problem also raised
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