FAQ

Indoor environmental inspections should always be performed by a trained, certified environmental professional—ideally someone holding ACAC, IICRC or Asbestos Inspector credentials. These qualifications ensure accurate findings, proper sampling methods, and compliance with industry standards.

Indoor air pollution can result from moisture intrusion and mold growth, poor ventilation, HVAC contamination, combustion sources (such as gas appliances), VOCs from building materials and cleaners, dust and dander buildup, and outdoor pollutants entering the home. A professional assessment can help determine what factors are affecting your property.

Yes. An HVAC system can affect your health if it contains mold, dust, or bacteria, or if filters are not maintained. Contaminants in the system can circulate throughout the home or office, contributing to respiratory irritation and allergy-like symptoms.

.

Mold in the crawlspace typically does not make you sick by directly traveling into your home; most mold remains localized to the crawlspace. However, poor crawlspace conditions—such as moisture, high humidity, pest debris, or odors—can migrate upward and affect indoor comfort, building materials, and the overall environment. Crawlspaces should be routinely monitored and properly maintained.

Common signs include musty odors, visible staining, condensation, peeling paint, warped materials, high humidity, or unexplained respiratory symptoms. Professional assessments using moisture meters, thermal imaging, and environmental sampling provide the most accurate detection.

Professional certifications (such as ACAC) require documented field experience, education, and ongoing continuing education. Assessment-based certifications are typically earned by completing a course and passing an open-book exam, but do not require real-world experience or continuing ed. Professional certifications ensure a higher level of expertise.

Sampling depends on your specific concerns and should follow an inspection. Options include air sampling, surface sampling, bulk sampling of materials, moisture mapping, VOC testing, and asbestos or lead sampling. A professional should determine which methods are appropriate.

Successful remediation requires correcting the moisture source, removing mold—not simply treating, fogging the area or painting over it—proper HEPA cleaning, and ensuring airborne particulate levels return to normal following the IICRC S520 Standards (Standard for Professional Mold Remediation). Post-remediation verification (clearance testing) shall be performed by an independent assessor.

Testing is required before any renovation, demolition, or disturbance of older materials; when damaged materials are present; during real estate transactions; or when children or sensitive individuals may be exposed. State and Federal regulations require testing prior to disturbance of any building materials that may be asbestos-containing. This should be performed by a State Licensed Asbestos Inspector.

‘Black mold’ is a general term often used to describe Stachybotrys chartarum, but mold color alone does not indicate species or toxicity. Many molds can appear black or dark in color. Laboratory analysis is the only way to confirm the type, and any mold indicates a moisture problem that should be addressed.

Maintaining proper ventilation, temperature, and humidity levels is essential for preventing moisture issues, mold growth, and poor indoor air quality. During the summer, indoor humidity should stay between 40–50%, with temperatures typically set between 70–75°F for optimal comfort and moisture control. In the winter, humidity levels may naturally be lower and are best maintained around 30–40%, with temperatures generally kept between 68–72°F.

Your HVAC system should remain in the fan AUTO position rather than ON, as this allows the system to cycle properly, remove moisture more effectively, and prevent unnecessary humidity buildup inside the property. Using bathroom and kitchen exhaust fans, keeping HVAC filters clean, and using dehumidifiers in damp areas further supports consistent indoor conditions. Following these guidelines year-round helps reduce odors, improve comfort, and protect your property from moisture-related damage.