To reduce the risk of indoor air contamination, what should be prioritized?

Prioritizing the regular maintenance of HVAC systems is crucial for reducing the risk of indoor air contamination. Properly functioning HVAC systems are essential for filtering and circulating air throughout a building. Regular maintenance, including changing filters, cleaning ducts, and checking for leaks or other issues, ensures that the system operates efficiently and effectively. This helps to improve air quality by removing dust, allergens, and other pollutants from the air.

Moreover, well-maintained systems help regulate humidity and temperature, which are important factors in preventing mold growth and other issues that can contribute to poor indoor air quality. By focusing on the upkeep of HVAC systems, the risk of contaminants circulating in the air is significantly minimized, thus promoting a healthier indoor environment.

In contrast, options like maximizing carpet and fabric usage can actually trap dust and allergens, while avoiding ventilation and using older heating systems may exacerbate air quality issues by preventing fresh air exchange and utilizing outdated technology that may not filter pollutants effectively.