Clean or inspect HVAC ducts if you smell must or see debris

What to Do

Have HVAC ducts professionally inspected and cleaned if you notice musty odors when the system starts, visible debris blowing from vents, or suspect mold growth.

Why It Works

HVAC ducts can accumulate pollen, dust, and mold over years, then redistribute these allergens throughout the home whenever the system runs. The EPA states cleaning is warranted if visible mold, vermin, or excessive dust is present. Proper cleaning removes years of built-up allergen reservoirs.

Tips

• Standard professional duct cleaning costs $300-500 for a typical home
• Ensure the company uses HEPA-filtered equipment and follows NADCA standards
• Duct cleaning is not needed routinely — only when there is evidence of contamination
• If mold is found, have it professionally assessed before DIY removal (improper removal worsens exposure)