05/27/2026
A musty smell when the AC or heat kicks on can be more than stale air. Mold inside an HVAC system can spread through the ductwork, reduce indoor air quality, and indicate moisture issues around coils, drains, filters, or vents.
TC HVAC Services LLC helps Northern Virginia homeowners inspect for HVAC mold issues, identify the moisture source, and recommend the right next step before the problem gets worse. If your system smells off or keeps triggering allergy-like symptoms, schedule a professional HVAC inspection.
https://tchvacservices.com/what-to-do-if-your-hvac-has-mold/