A ventilation unit uses a disposable, nonwashable air filter. Inspection shows that it has reached the manufacturer's replacement criterion. Which maintenance action is appropriate?
- Replace it with the specified compatible filter using the prescribed service procedure.
- BKeep operating indefinitely and only change the calendar schedule.
- CInstall any higher-MERV filter without checking compatibility.
- DWash and reuse the nonwashable filter.
Where to look it up
https://www.cdc.gov/infection-control/hcp/environmental-control/air.html
Why A is correct
Replace the disposable filter as specified after following the equipment service and isolation instructions. Washing a nonwashable filter or choosing a more restrictive filter without checking system compatibility is not an equivalent remedy.