A hospital air-handler filter has the specified media rating, but inspection finds gaps around its frame. What issue should be corrected?
- AThe room number on the maintenance log.
- BThe paint color on the access panel.
- Air bypass around the filter seals.
- DThe filter rating alone, with no attention to the gaps.
Where to look it up
https://www.cdc.gov/infection-control/hcp/environmental-control/air.html
Why C is correct
Air that bypasses the media is not filtered by it. CDC discusses correct installation and maintenance of filtration systems; media rating alone does not establish installed performance.