California Supplemental (CSE) Practice Exam

What MERV rating is recommended for optimum performance in a hospital?

1. 1 to 4

2. 5 to 8

3. 13 to 16

4. 17 to 20

The correct answer is: 13 to 16

A MERV (Minimum Efficiency Reporting Value) rating of 13 to 16 is recommended for optimum performance in a hospital setting because filters in this range are capable of effectively capturing a significant percentage of airborne particles, including those that are particularly harmful in a healthcare environment. This includes bacteria, viruses, and allergens, which are critical to manage in hospitals to prevent infection and maintain air quality. Filters with MERV ratings in the 13 to 16 range can capture particles as small as 0.3 to 1.0 microns with a high efficiency level, which is essential in medical facilities where cleanliness and air purity are of utmost importance for patient safety and comfort. This level of filtration helps to reduce the risk of airborne diseases, thereby improving the overall health outcomes for patients. In contrast, lower MERV ratings, such as 1 to 4 or 5 to 8, do not provide adequate filtration for the small particles that may contaminate the air in hospitals. While ratings of 17 to 20 offer higher filtration capabilities, they may also produce increased resistance to airflow, which can strain HVAC systems and lead to higher operational costs. Thus, the recommendation of MERV 13 to 16 strikes the right balance between effective filtration and