How many air exchanges per hour are required in a CPCH using mechanical ventilation?

In a Congregate Care Facility using mechanical ventilation, the standard requirement for air exchanges helps ensure a safe and healthy environment for residents, particularly those with varying levels of health care needs. The optimal number of air exchanges is critical in reducing the risks of airborne contaminants and maintaining good indoor air quality.

Two air exchanges per hour strike a balance between maintaining sufficient ventilation and being energy efficient. This level helps dilute indoor pollutants and replace stale air without excessive energy expenditure, which is particularly important in assisted living environments where cost management is vital.

By ensuring that there are two air exchanges every hour, the facility can effectively mitigate the buildup of odorous substances, carbon dioxide, and other potential airborne irritants or pathogens, thus creating a more pleasant and healthier living space for residents. This standard is well supported by guidelines and regulations pertaining to ventilation in health care and assisted living settings.