24/09/2026
💨 Your Extractor Fan Is Running, but Is the Air Actually Getting Outside?
You switch the bathroom fan on.
You can hear it running.
So it's working… right?
Not necessarily.
An extractor fan can appear to be operating normally but still fail to move enough air out of the property.
The problem may not even be the fan itself.
Poor extraction can be caused by:
🔹 Crushed or compressed flexible ducting
🔹 Excessively long duct runs
🔹 Too many bends
🔹 Poorly installed ductwork
🔹 Restrictions at the external terminal
🔹 Incorrect fan selection
🔹 Poor commissioning or installation
And if moisture isn't being removed effectively, it can contribute to condensation, damp and mould.
That's why simply checking that a fan switches on doesn't tell you how well the ventilation system is actually performing.
At homeperform, we can measure the airflow being achieved at the extract point and investigate the installation where performance isn't as expected.
Because when it comes to ventilation, it's not just about whether the fan is running.
It's about how much air it's actually moving.
Experiencing condensation, mould or poor ventilation in your home?
Speak to homeperform about ventilation and airflow testing.