Updated 5/21/2024

Mold growth in your home’s air conditioning (AC) ducts can lead to various health issues. When the cool air flows through the ducts, condensation can occur, creating an ideal environment for mold and bacteria to thrive. If you notice a musty smell or see mold in your duct system, it’s crucial to address the issue promptly to prevent health risks.

How to remove mold from air ducts

Is Mold in AC Ducts Dangerous?

High mold concentrations in your AC ducts can lead to daily inhalation of mold spores, potentially causing respiratory issues such as sinusitis, asthma symptoms, and more severe conditions like pulmonary hemorrhages.

Detecting Mold in Your AC Ducts

Signs of mold growth in your HVAC system include:

  • A musty or mildew odor throughout the house.
  • Sneezing, a runny nose, and watery eyes when the AC is turned on.
  • Headaches occurring only when inside the home.
  • Feeling dizzy, nauseous, and tired at home.
  • Visible mold or black spots on air vents.

Removing Mold from AC Ducts

For extensive mold growth, it’s advisable to use a professional remediation service. However, for less severe cases, you can try the following DIY methods:

  1. Bleach: Mix one part bleach with 16 parts water. Vacuum the air vents with a HEPA vacuum, then scrub the affected parts with the bleach solution. Soak the vent in the bleach solution, scrub it with a brush, and clean the inside of the air vents. Allow the vent to dry before replacing it.
  2. Dish Soap: Use a few drops of dish soap in warm water to soak the vent for half an hour. Vacuum the inside of the air vents, wipe down the vent grill and air ducts with soapy water, and let them dry before replacing the vent.
  3. Laundry Detergent: Soak the vent grill in water with laundry detergent for about 10 minutes, then rinse with water. Vacuum the inside of the vents, wipe down the inside with soapy water, and replace the vent grill when dry.
  4. Baking Soda and Detergent: Mix one cup of water, one tablespoon of laundry detergent, and half a tablespoon of baking soda. Submerge the vents in the solution for at least 10 minutes, then vacuum the inside of the vents. Wipe down the inside of the vents with the solution, scrubbing when necessary, and replace the vent when dry.
  5. Mold Removal Fogger: After cleaning, use an EPA-registered disinfectant fogger to kill remaining spores. These foggers create a mist of antimicrobial and odor-controlling solution for mold remediation.

DIY vs. Professional Mold Removal

While DIY methods may save money, they may not effectively handle the problem, especially for hidden mold. Hiring a professional ensures thorough removal and prevents further health hazards.

Preventing Mold Growth in AC Ducts

Controlling moisture is key to preventing mold growth. Follow these steps:

  • Regularly replace HVAC filters.
  • Insulate air ducts to reduce condensation.
  • Monitor and clean condensate/drip pans.
  • Address leaks promptly.
  • Install UV light or ionization air purifiers.
  • Use an EPA-registered mold growth inhibitor.

By following these steps, you can effectively remove mold from your AC ducts and prevent its recurrence, ensuring clean and healthy air in your home.

Use a Professional HVAC Contractor

If you’re uncomfortable dealing with mold problems by yourself, it’s best to hire a professional. In fact, hiring an expert is usually the best route. Mold issues can be severe enough that normal solution methods won’t work. For situations where mold keeps returning in your home, it’s important to have a professional address the situation. At Fire 'n' Ice Heating & Cooling, Inc., we understand the importance of having good air quality in your Downers Grove home. That’s why we use advanced mold removal techniques to ensure that everything harmful all gets kills and removed from your duct system.

Your Trusted HVAC Specialists

At Fire 'n' Ice Heating & Cooling, Inc., we’re committed to offering outstanding heating and cooling repair, replacement, and tune-up services to the residents of Downers Grove. Our team is also highly experienced with indoor air quality systems, and we want people to be safe in their homes. We have NATE-certified technicians who receive ongoing training and stay current with the industry. Our focus on excellence has earned us an A+ rating from the BBB. We’re proud to be a Healthy Air Expert. Our locally owned and operated company has been serving the residents of the area for more than 40 years. Give us a call at Fire 'n' Ice Heating & Cooling, Inc. today!

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