Learn to identify visual and sensory signs of moisture damage and hidden mold — including stains, odors, peeling surfaces, and hidden condensation sources.

Spot stale air, condensation, and other signs of poor airflow. Understand the role of windows, exhaust fans, and passive ventilation in healthy homes.

Recognize signs of poorly maintained HVAC systems, such as dirty vents, strange smells, inconsistent temperatures, and unusual noise patterns.

Learn how signs of rodents, insects, and dust accumulation often point to deeper IAQ issues. Includes visual cues and odor indicators.

Understand how cracked drywall, discolored flooring, and certain materials can signal underlying environmental health concerns.

Examine how clutter, cleaning habits, air fresheners, and even pet behaviors can impact IAQ and signal broader concerns.

Master the art of noticing subtle cover-ups or IAQ warning signs during home showings: fresh paint, sealed crawlspaces, plugged vents, and more.

This bonus module expands your awareness beyond the indoors. Learn how seasonal triggers like pollen and humidity shifts affect IAQ, spot post-renovation concerns such as off-gassing or improper sealing, and identify outdoor red flags like roof stains, drainage issues, or blocked vents — all before you even step inside.