Mold Growth in HVAC Systems: What Missouri Homeowners Should Know
If your home has recently experienced water damage or excess humidity, your HVAC system could be hiding more than dust. Mold can grow inside your air ducts, vents, coils, or drip pans — and spread spores throughout your home every time the system turns on.
At Purisync Heating and Air, we help homeowners in Kirkwood and surrounding areas detect and remove mold from HVAC systems before it affects your air quality and health. Here’s what to know.
How Mold Gets Into Your HVAC System
HVAC systems create the perfect environment for mold to grow:
- Moisture from condensation or humidity
- Dust and organic particles as a food source
- Dark, enclosed ductwork and air handlers
Water leaks, clogged drains, or poor ventilation can accelerate mold growth — especially after flooding, storms, or a burst pipe.
Signs of Mold in Your HVAC System
- Musty or earthy smell when the system runs
- Visible mold around supply vents or intake grills
- Frequent allergy or respiratory symptoms indoors
- Excess dust or dark buildup inside ducts
- Recent moisture issues in attics or basements
If you notice any of these signs, schedule a professional inspection and moisture assessment.
Health Risks of HVAC Mold Exposure
Mold spores circulating through your home’s ductwork can trigger:
- Allergies and asthma attacks
- Chronic coughing or sinus issues
- Headaches, fatigue, or itchy eyes
- Increased risk for children, elderly, and immunocompromised individuals
How We Remove Mold from HVAC Systems
Our certified team follows a proven process for HVAC mold removal:
- Thorough inspection using moisture meters and duct cameras
- Sealing off the HVAC system to prevent cross-contamination
- HEPA vacuuming and antimicrobial treatment of ducts and coils
- Filter replacement and HVAC system sanitization
Can Mold Come Back?
If moisture returns, mold can regrow. We recommend combining removal with:
- Whole-home dehumidification
- HVAC maintenance and cleaning every 1–2 years
- Leak detection systems to prevent future water issues
Serving Homes Across Missouri
Purisync provides mold remediation and HVAC cleaning throughout:
Call (314) 338-5111 or schedule a mold inspection to protect your indoor air quality and HVAC system today.
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