What Causes Mildew Around Air Conditioning Vents

An unusual or musty odor is often the first sign of mold in air ducts or in air vents.

What causes mildew around air conditioning vents.

If you live in a wet climate such as a southern state or tropical country it is likely that you ve had to clean mildew off your bathroom walls basement floorboards or even from behind your wallpaper. Nobody wants moisture to turn into mold or mildew in their air ducts. Condensation forms in the coils and ducts as cool air circulates through the system creating a habitat for moisture loving mold. The black dust may be patchy and difficult to wipe off.

You may need more duct or attic insulation in order to solve the problem. Black mold has a distinctive unpleasant musty smell. As cool air flows through the vents on hot days the moisture in the air can condense inside the air vent. Mildew can also often grow inside air conditioning vents.

Causes of moisture around hvac vents insufficient insulation. Common causes of black mold in air vents. Air conditioner vents can be breeding grounds for black mold. Black dust around air vents.

In many cases you ll smell it before you can see it. If there is black mold growing in your air vents you may notice a musty aroma when you run. You can see the same principle at work when you drink an icy beverage and water beads up on the outside of the glass. Mildew is a type of fungus that grows in damp and humid areas.

If you notice a musty or moldy smell that goes away when you are not using your air conditioning or heating if they share ducts that can narrow the cause down to mold in your hvac system.