HVAC Filter Change and Pressure Differential Log

This template is built for clinical areas, isolation rooms, and other HVAC zones where filter condition and pressure differential affect air quality and infection control. It is especially useful where the unit serves spaces with documented filter schedules and stricter housekeeping expectations. If your site does not require pressure logging or contamination-aware filter handling, a simpler maintenance checklist may be a better fit.

The template is set up as a monthly recurring task, which matches common filter inspection and replacement cycles in healthcare and controlled environments. You can shorten or extend the recurrence based on actual loading, BAS trends, or facility policy. If pressure differential rises sooner than expected, the task should be pulled forward as a blocking maintenance item.

A qualified HVAC technician or facilities maintenance DRI should run it, with a second technician or supervisor verifying lockout/tagout where required. In regulated clinical settings, infection control or environmental services may need to be notified when contaminated filters are removed. The template works best when one person performs the physical work and another confirms the critical safety step.

Yes, the checklist reflects common OSHA lockout/tagout and respiratory protection practices, plus healthcare infection-control handling for potentially contaminated filters. It also supports documentation patterns used in facility audits and preventive maintenance records. It is not a substitute for your site policy, but it helps standardize the evidence you need to show the work was done correctly.

Teams often skip the pre-change pressure reading, replace the filter without checking for bypass gaps, or forget to inspect gaskets and housing damage. Another common miss is installing the wrong MERV rating or reversing airflow direction. The log also helps prevent incomplete disposal handling when filters from clinical areas need bag-in/bag-out treatment.

Yes, and you should. Different units may use different filter sizes, MERV ratings, access methods, or pressure thresholds, so the checklist should match each AHU's filter schedule. You can also add unit-specific verification steps for HEPA housings, prefilters, or isolation exhaust systems.

An ad-hoc note usually captures only that a filter was changed, while this template captures the conditions that justify the change and the verification steps that prove the job was done safely. That matters when you need to show trend data, confirm no bypass occurred, or explain why a unit was escalated. It also reduces variation between technicians, which is important for repeatable maintenance.

Yes. The pressure differential reading can be paired with BAS trend data, and the completed checklist can be attached to a CMMS work order or preventive maintenance record. If your workflow uses photo evidence or supervisor approvals, those can be added as required verification steps without changing the core task structure.