Vacuum noise service — normal vacuum is 70-75dB. If unusually loud, issue exists. Causes: worn motor bearings, metal object stuck in fan, worn carbon brushes, or bent suction fan.
See if any of these signs match your device — each one increases the likelihood of this fault.
These are the causes we encounter while repairing Loud unusual vacuum noise — ranked from most to least common.
Worn motor bearings
Metal object stuck in suction fan (nail, coin)
Worn carbon brushes
Bent suction fan
Object stuck in cooling fan
Loose motor mount
Bad capacitor causing irregular rotation
Any of the following = a danger signal — call now and don't try to fix it yourself.
On-site diagnosis, clear pricing before any work, and a documented 6-month warranty.