(k) Ventilation
If you own or control buildings or structures with existing heating, ventilation, and air conditioning (HVAC) system(s) you must ensure that:
- the HVAC system(s) is used according to HVAC manufacturer’s instructions and design specifications;
HVAC systems should be inspected for proper ventilation.
- the amount of outside air circulated through its HVAC system(s) and the number of air changes per hour are maximized as appropriate;
- all air filters are rated Minimum Efficiency Reporting Value (MERV) 13 or higher, if compatible with the HVAC system(s). If MERV-13 or higher filters are not compatible with the HVAC system(s), use filters with the highest compatible filtering efficiency for the HVAC system(s);
- all air filters are maintained and replaced as necessary to ensure the proper function and performance of the HVAC system(s); and
- all intake ports that provide outside air to the HVAC system(s) are cleaned, maintained, and cleared of debris.
Where you have airborne infection isolation rooms (AIIR), maintain and operate them in accordance with their design and construction criteria.
- Note 1: This section does not require installation of new HVAC systems or AIIRs to replace or augment functioning systems.;
- Note 2: In addition to the requirements for existing HVAC systems and AIIRs, consider other measures to improve ventilation in according to CDC’s Ventilation Guidance (e.g., opening windows and doors). This could include maximizing ventilation in buildings without HVAC systems or in vehicles.
Knowledge Check Choose the best answer for the question.
1-10. All air filters should have a Minimum Efficiency Reporting Value (MERV) of _____, if compatible with the HVAC system(s).
You forgot to answer the question!