Understanding This Problem
Musty smells indicate moisture and potential mold growth in your HVAC system or ductwork. This affects both air quality and health.
Quick Answer
Musty Smell From Vents usually points to mold in ductwork, dirty evaporator coil, clogged drain line. Start with the safe checks listed below, document what changed, and stop running the equipment if the symptom involves burning smells, gas odor, repeated breaker trips, ice, water damage, or unsafe operation.
Common Causes
What You Can Do
What to Document Before Scheduling
Prevention Tips
- Use UV air purifier in air handler
- Keep drain lines clear
- Address home humidity issues
- Annual coil cleaning
Questions Before Approving Repair
Schedule service soon to prevent the problem from worsening.
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