When most people think of mold, “black mold” tends to dominate the conversation. But another mold type is just as important—Aspergillus. Found in homes, hospitals, and even the air we breathe, this mold can trigger allergies, infections, and more serious health issues if left unchecked. Whether you’re a homeowner, property manager, or simply concerned about indoor air quality, understanding Aspergillus is essential.
What Is Aspergillus?
Aspergillus (pronounced as-per-JILL-us) is a genus of mold that includes over 200 species. While some are harmless or even beneficial (like those used in food fermentation), others pose serious health risks. It’s typically green, yellow, or white and has a powdery or velvety texture when growing.
Common places Aspergillus is found:
- HVAC systems and ductwork
- Damp drywall or ceiling tiles
- Window sills
- Attics and basements
- Airborne dust in homes and commercial buildings
Health Effects of Aspergillus
The health risks depend on the species and the individual exposed. For most healthy people, exposure to small amounts may only cause mild irritation. But for those with asthma, allergies, or compromised immune systems, it can be dangerous.
Some health effects include:
- Allergic Aspergillosis: Causes wheezing, coughing, sinus issues, and respiratory inflammation.
- Aspergilloma (fungus ball): Can form in lungs or sinuses after long-term exposure—particularly in those with pre-existing lung conditions.
- Invasive Aspergillosis: A rare but severe condition where the mold spreads from the lungs to other organs. Life-threatening in immunocompromised individuals.
- Skin or eye infections: From direct contact in rare cases.
Why Aspergillus Grows Indoors
Aspergillus spores are everywhere—indoors and out—but they grow when moisture and organic material combine. Water-damaged drywall, dust buildup in vents, or humidity above 60% can all provide a perfect breeding ground.
Signs of Aspergillus in a Home or Business
- Musty or earthy odors, especially near vents or damp walls
- Frequent sinus or respiratory issues in occupants
- Visible mold colonies that are greenish or pale yellow
- Unexplained worsening of asthma or allergy symptoms
How MSI Can Help
At MSI, we’ve tested and remediated properties for Aspergillus for decades. Our process includes:
- Air and surface sampling to confirm presence and identify the exact species
- Source tracking to locate where it’s growing—often hidden in ductwork or behind walls
- Professional remediation to ensure removal meets clearance standards
- Recommendations for moisture control and prevention
Don’t Ignore This Common Mold
Aspergillus may not get the headlines that black mold does, but it can be just as disruptive—and dangerous. If you’re noticing persistent symptoms, strange odors, or past water damage, don’t wait.
Call MSI today to schedule a mold inspection. Protect your property and your health—before Aspergillus becomes a bigger problem.