LEED AP Building Design and Construction (BD+C) Practice Exam

What should be used on operating air-handlers during construction according to IAQ management guidelines?

1. MERV 6 filters

2. MERV 8 filters

3. MERV 11 filters

4. MERV 13 filters

The correct answer is: MERV 8 filters

During construction, it is recommended to use MERV 8 filters on operating air-handlers to maintain indoor air quality (IAQ). MERV, or Minimum Efficiency Reporting Value, is a rating scale used to measure the effectiveness of air filters. MERV 8 filters are capable of capturing a significant percentage of airborne particles, including dust, pollen, and mold spores, which can be elevated during construction activities. Using MERV 8 filters specifically aligns with guidelines designed to ensure that the air quality is manageable and minimizes the impact of dust and other particulates generated during construction. While filters with a higher MERV rating, such as MERV 11 or MERV 13, would offer greater filtration capabilities, they may place increased resistance on the air-handlers and could lead to reduced airflow or strain on the HVAC system during construction activities. MERV 6 filters may not provide adequate protection from the increased dust and particulate matter typically present on construction sites. Thus, MERV 8 filters strike an appropriate balance between maintaining airflow and ensuring a cleaner air environment, thus adhering to IAQ management protocols.