A/c nouns handler is making a loud in a minute when running. Can below within nouns handler be malfunctioning? My a/c air handler is very loud when a/c is running. I've...

My a/c air handler is very loud when a/c is running. I've also notice the blower or fan within the heavens handler is very dirty, looks like mildew or mold on supporter blades. I have mildew shooting out a/c vents thru out the house. Can a blower be replaced separately inside the air handler?
Washer and Dryer Repair Business Name?
Answers:    If there is greatly of debris collected on the blower wheel it could hold it out of balance causing a throb. If removed from the unit it can be washed rotten with a garden hose.
1st time home buyer, trying to avoid grease...
yes it can