Which factors are critical in managing indoor air quality to prevent mold?

Maintaining temperature and humidity is critical in managing indoor air quality to prevent mold growth because mold thrives in environments where the humidity levels are high, typically above 60%. By controlling humidity through adequate ventilation, dehumidifiers, or air conditioners, you can create an environment that is less conducive to mold development. Additionally, temperature control also plays a role; mold prefers warmer temperatures, so keeping indoor temperatures cooler can further inhibit its growth.

While factors like outdoor air circulation, increased lighting, and keeping doors and windows closed may have some influence on indoor air conditions, they do not address the primary conditions that exacerbate mold proliferation as directly as managing temperature and humidity. For instance, outdoor air circulation can help reduce humidity levels but may not always be feasible or effective, especially in climates with high outdoor humidity. Increased lighting does not significantly impact mold prevention either, as mold can grow in both light and dark conditions, while closing doors and windows can trap humidity and lead to stale air—an unfavorable condition for mold prevention. Therefore, focusing on temperature and humidity control is the most effective strategy to prevent mold growth in indoor environments.