What Causes Black Mold In Ac Ducts

Air conditioner vents can be breeding grounds for black mold. That s why it s common for mold to form in or around your ac system and ducts. One of the first signs that black mold is growing in your air vents is a distinct musty mildew like smell in specific rooms or even throughout your entire home.

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As cool air flows through the vents on hot days the moisture in the air can condense inside the air vent.

What causes black mold in ac ducts.

Common causes of black mold in air vents. Mold grows in ductwork when two things are present. Mold in air ducts most commonly occurs when there is moisture inside the ductwork. The mold infesting the system can gradually reduce the quality of how the ac works.

The relationship between the velocity of the air and the number of particles found in the air is what causes this phenomenon. You can see the same principle at work when you drink an icy beverage and water beads up on the outside of the glass. Another side effect of black mold in air ducts is making the air become less cool and more humid. Eliminate cold air leakage.

A humid climate along with poor ventilation or anything that traps moisture in your walls and causes condensation can lead to mold in air ducts. A warm location with high water vapor content is particularly prone to mold buildup within the ducts. Mold especially grows on the cold spots that create condensation. Water vapor can form within the duct system when cold air passes through and when there is high water vapor content in the outside environment the water droplets usually collect instead of.

Replace duct board with properly sized ducts. Mold on duct board trunk line flir photo of molding supply trunk line. You may also be able to see the presence of mold around drip pans air ducts and within intake vents. Mold on flex ducts that are touching moldy flex duct.

If there is black mold growing in your air vents you may notice a musty aroma when you run your ac. Black mold has a distinctive unpleasant musty smell. With black mold growing in your air ducts you may notice symptoms like itchy eyes and sneezing growing worse when you re indoors particularly when you re running the ac. Moisture and warm temperatures.

This is also why regular maintenance on the air conditioner is very important. Condensation forms in the coils and ducts as cool air circulates through the system creating a habitat for moisture loving mold. And as air circulates through your system it will pick up the mold spores in your ductwork and push them into your home through the air vents which explains the black flakes around your vents. Hire a mold remediation specialist.

A warm humid environment has the ideal conditions for mold to form. Cures for mold on duct board trunk lines. The majority of the time this is not a cause for concern because it is not mold but simply dark dirt. What causes mold infestation in the hvac air ducts.