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How to Remove and Prevent Mold in Your Heating & Air Conditioning System

Photo credit: Bigstockphoto
Photo credit: Bigstockphoto

Mold thrives in wet, humid environments. As such, your heating and air conditioning systems are vulnerable to fungal growth. Mold is linked to various respiratory ailments. Its spores will disperse to various parts of your living space, destroying the home from the inside and out. Don’t wait until the entire ventilation system is destroyed by mold. In today’s post, we are listing down ways to eliminate mold in your HVAC system:

Signs of Mold

The most common signs of mold in the HVAC system are the distinct smell of mildew as well as greenish-brown to black spots all over the unit. Usually, mold forms in the air ducts, intake vents, drip pans and cooling coils. If you believe that your system is moldy, do not turn on the air conditioning system. The influx of air will only blow the spores inside your house. If you cannot see the mold, but you can smell the mildew, call a professional to inspect the system.

How to Remove Mold in Heating and Air Conditioning System

It is hard to remove mold in the HVAC system on your own because there are nooks and crannies that mold spores can get into. Usually, this problem is best left to the professionals. But if you want to remove the mold on your own, try the following:

Step 1: Choose the Best Cleaning Solution

To eliminate mold, use detergents that can kill spores. You can use common household detergent and mix it with water. You can also purchase a commercial mold removal product. You can also make a cleaning solution by mixing baking soda with a cup of water and a tablespoon of liquid detergent. Finally, you can also opt for a borax solution (a cup of borax mixed in 1 gallon of water). Transfer the cleaning agent of your choice in a spray bottle for easy application.

Step 2: Wear Safety Gears

You do not want to inhale spores while cleaning your HVAC system. Wear a dust mask, a pair of gloves and a pair of protective eyewear. The dust mask should be EPA-recommended. Also, wear overalls to protect yourself from the mold.

Step 3: Clean the HVAC System

Start applying the cleaning solution by spraying the affected area with the cleanser and then wiping it off with a damp rag. Do not use abrasive tools to wipe away the mold.

Apply the mold remover generously and let it sit for a few minutes before scrubbing the area clean. With a disposable towel, disinfect the affected area with bleach and wipe off the excess solution. After you cleaned the entire HVAC system, leave the area to dry. To make sure the problem does not happen again, check for mold every few months.

Preventing Mold Re-Growth

To prevent mold from re-growing, always change the air filter every 2 to 3 months. You need to run a dehumidifier to keep the air dry and not wet. In addition, insulate the air ducts so the temperature remains constant. Insulation also prevents condensation. Finally, have your HVAC system checked regularly to maintain the system.


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