Moldy, musty smell coming through air vents?

Question

What could this be? The smell gets worse at night. We do have a crawl space if that matters. Also some of the vents on one end of the house doesn't blow air out like they should and because of this those rooms are getting pretty hot right now, the smell is also way worse in that end of the house. Any help would be appreciated, I just want to know if it is something me or my husband could maybe fix or if we need to call a professional! Thanks!

Answer 1

Sounds like a buildup of dust in your ducts.  There are companies that specialize in duct cleaning you might want to call them and have them heck it out

Answer 2

it sound like something has come apart under the home or something has pulled ducts apart. The only to find out is go take a look!