Buderus
Airflow or Vent Resonance Noise
Furnace is very noisy during operation, with whistling or howling sounds from the vent
Advertisements
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Advertisements
Possible Causes
Partially blocked intake or exhaust, Incorrect vent pipe sizing, Loose vent joints, High fan speed setting
How to Fix / Troubleshooting
Safety: Turn off power before touching vent components; ensure vent is cool.
Steps:
- Inspect terminations: Check outdoor intake and exhaust for obstructions and clear them.
- Check vent supports: Ensure vent pipes are properly supported and not vibrating against framing.
- Seal joints: Use appropriate high-temperature sealant or gaskets where specified by Buderus to prevent whistling at joints.
- Fan speed: On systems with adjustable fan speed, consult the manual or technician to reduce speed within allowed limits.
If noise persists, a professional should evaluate vent design and combustion settings.
Advertisements
Repair Difficulty
Medium
3/5
Advertisements