Most Homeowners Fail This HVAC Maintenance Quiz — Can You Pass?Share:FacebookPinterestTwitterMailWhat does a burning smell from vents usually mean?60%Next Correct Incorrect A burnt scent is a red flag—often wiring or a motor overheating. It’s one smell you never want to ignore. What does a burning smell from vents usually mean? High humidity Too much sunlight Electrical or motor issue Old carpeting 60%
