Buva malfunction
Buva ventilation unit making noise
Is your Buva ventilation unit or HRV unit making more noise than usual? A humming, grinding, rattling, or squealing sound often indicates motor wear, worn bearings, or fan contamination. In many cases, refurbishment is a sustainable and cost-effective solution.
- Humming or grinding sound
- Vibrations or resonance
- Motor overhaul often possible
What do you notice?
- The ventilation unit makes more noise than before.
- A humming, grinding, rattling or squealing sound.
- The noise increases with a higher ventilation setting.
- Vibrations through walls, ceiling or ventilation ducts.
Possible causes
- Worn bearings or rotating parts.
- Contamination of fan or motor.
- Imbalance of the fan wheel.
- Wear of motor or mounting rubbers.
What can you check yourself?
Listen carefully to the type of sound and check if the sound changes when you select a different ventilation setting. Always switch off the power to the ventilation unit before opening or inspecting it.
Are you unsure about the cause?
Use our troubleshooting tool. It allows you to determine, step by step, why your Buva ventilation system is making noise.
Start the troubleshooting toolWhen is overhaul possible?
When the noise is caused by wear to the motor or bearings, overhaul is often an excellent solution. This usually means that the complete ventilation unit or HRV unit does not need to be replaced.
Choose the right solution
Is your problem or model not listed?
Use our troubleshooting tool or parts finder. We are happy to help you find the right solution for your Buva ventilation system.
Start troubleshooting tool Find parts