Signs and Symptoms of Mold in a Furnace

Mold is a problem in many homes. Commonly found in basements, bathrooms, and kitchens, mold can also appear within the furnace itself. Look for signs of mold in the furnace, then have it serviced to restore healthy functioning.

Signs of Mold in a Furnace

Mold in the furnace can become apparent when the blower pushes air throughout the home. A mildewy smell is a great indicator of the presence of mold.

Respiratory Symptoms

When residents of a home develop allergic symptoms involving the respiratory system such as cough, congestion, sinus infection, asthma, and bronchitis, and no other source of mold is visible, check the furnace.

Nervous System Symptoms

People suffering from unexplained headaches, decrease in attention span or memory, difficulty concentrating, or dizziness, should have their furnaces checked for mold contamination.

Other Physical Symptoms of Mold Exposure

People suffering from other physical symptoms of mold exposure should also have their furnaces checked for mold. These symptoms include skin rash, itchy eyes, fatigue, and a general unwell feeling that disappears when leaving the house.

Visible Signs of Mold

Check the furnace, for black, gray-brown, gray-green, or white-and-orange spots. Pay particular attention to the insulation, condensers, cooling coils, and drip pans of furnaces and air conditioners, as well as ductwork. A professional can check and clean these for you.

Furnace Filters

Check furnace filters regularly and replace them at the beginning of each season to reduce the amount of mold spores growing in the furnace area.

About the Author

Andrea Coventry has been writing online since 2007. Her expertise includes teaching, working with children and Montessori schools. Her work has appeared in various online publications. Coventry is certified by the American Montessori Society.