Loud hood noise service — strange noise indicates mechanical issue. Most common: worn motor bearings from grease + heavy use. Second: bent fan blade.
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 noise from hood — ranked from most to least common.
Worn motor bearings (most common)
Bent fan blade from impact
Object stuck in motor housing (hair, insect)
Grease buildup on fan blades
Loose motor mount
Bad capacitor causing irregular rotation
Hood mounting not tight
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.