If your AC is producing a bad odor, chances are mold or mildew has spread within the ductwork. Moisture often accumulates inside your unit due to a drainage leak or high humidity level. When moisture builds up inside vents or air ducts, it creates a friendly environment for bacteria to grow. Here are some reasons why your AC can smell musty. To avoid mold-related issues, you have to maintain your HVAC systems. Mold and mildew can grow inside an air conditioning system for many reasons. Why Does My Air Conditioner Smell Musty?Ī musty smell, whether it is coming from your AC or basement, is an indication of bacterial growth. In this post, we’ll discuss common reasons why your AC smells musty and what you can do to eliminate the odor. A musty smell is a potential health hazard, so you can’t ignore it. A variety of factors can lead an AC unit to release an unpleasant odor. The question is why your AC smells musty - is it normal or is there something unusual happening inside the AC? If you experience an odor when you turn on the AC, it could be a sign of mold growing inside the unit or the air ducts.įirst of all, you need to figure out the source of the smell. But what if your AC smells like rotten wood? You don’t want to turn off the AC and have to go back to suffering inside but at the same time that smell is unsettling and overwhelming. You can simply turn on your AC and have the comfort you need. There’s nothing better than having an air conditioning system during the hot and humid summer season.
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