Can Mold Grow in Air Ducts?
Learn about mold and why it grows in air ducts.

Written By Rinea Blanchard
Written and fact-checked by an industry expert. ✔️
Yes, mold can grow in air ducts. When there’s a source of moisture and organic matter for mold to eat, like dust and debris, mold grows.
Moisture sources typically responsible for mold growth in air ducts are clogged drainage lines, leaks in ducts, plumbing, or roofing, lack of proper insulation, and an overall high humidity.
Signs of mold include a musty smell, dark spots around your vents, and mold itself being clearly visible.
What to Do Next
If there is mold in your air ducts, you should have it professionally cleaned and removed.
Call Superior Contract Cleaning if you’re in the Acadiana area, and we’ll promptly and efficiently clean up your air ducts, fix any leaks, and remove any mold.
