Vasco malfunction
Vasco ventilation unit hums
Is your Vasco ventilation unit, HRU, or ventilation motor humming? A humming sound often occurs due to worn bearings, a heavy-running motor, contamination, or resonance of the ventilation unit or ductwork.
- Constant hum
- Vibrations or resonance
- Motor overhaul often possible
What do you notice?
- A low hum from the ventilation unit.
- The humming gets worse at a higher ventilation setting.
- Vibrations through the wall, ceiling, or ventilation ducts.
- The motor still runs but sounds heavier than usual.
Possible causes
- Worn bearings.
- Imbalance of fan or motor.
- Contamination of fan impeller or motor.
- Resonance of the ventilation unit or ductwork.
What can you check yourself?
Check if the humming comes from the motor itself or is amplified by the casing or ducts. Also, notice if the sound changes when you choose a different ventilation setting. Always de-energize the ventilation unit before opening it.
Not sure where the humming comes from?
Use our troubleshooter to determine step by step why your Vasco ventilation unit is humming and what solution is appropriate.
Start the troubleshooterWhen is overhaul possible?
Is the humming caused by wear on the motor or bearings? Then overhaul is often an excellent solution. This can make your Vasco ventilation system function quietly and reliably for years to come.
Choose the right solution
Is your problem or model not listed?
Use our troubleshooter or parts finder. We are happy to help you find the right solution for your Vasco ventilation system.
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