CF ChatterFix
Preventive Maintenance

Air Filter Replacement Route

Filters are the cheapest maintenance in the building and the most consequential when skipped. A loaded filter starves airflow, which drops capacity, ices coils, and drives fan energy up — and once media blows out or bypasses a bad seal, dirt loads the coil instead, which is a far more expensive clean.

Interval Quarterly
Est. Duration 2.0 hrs
Steps 4
Applies To Facilities & Property Management, HVAC & Building Services Contractors

The Procedure

The steps ChatterFix schedules for this PM. Every step is a checkable item on the work order — a technician can speak their way through it without touching a keyboard.

  1. Record differential pressure across each filter bank before change
  2. Replace filters with the specified MERV rating
  3. Inspect filter racks and seals for bypass
  4. Log the change date and next-due on the unit

Why This PM Exists

Filters are the cheapest maintenance in the building and the most consequential when skipped. A loaded filter starves airflow, which drops capacity, ices coils, and drives fan energy up — and once media blows out or bypasses a bad seal, dirt loads the coil instead, which is a far more expensive clean.

What Skipping It Looks Like

Comfort complaints nobody can explain, coils that need chemical cleaning years early, and a fan running harder than it should for the entire period between changes.

Setting the interval

Quarterly suits most commercial buildings. Let differential pressure set the real interval — record it at every change and you will quickly learn which units need more frequent attention and which are being changed too early.

Equipment This Covers

Common Questions

How often should this PM run?
Quarterly. Quarterly suits most commercial buildings. Let differential pressure set the real interval — record it at every change and you will quickly learn which units need more frequent attention and which are being changed too early.
How long does it take?
Budget about 2.0 hours for a technician working to the standard procedure. ChatterFix uses that estimate for capacity planning, then learns your plant's actual time from completed work orders.
What happens if we skip it?
Comfort complaints nobody can explain, coils that need chemical cleaning years early, and a fan running harder than it should for the entire period between changes.
Can I use this checklist in ChatterFix?
Yes — this exact procedure ships in the Facilities & Property Management and HVAC & Building Services Contractors industry pack. Pick your industry at signup and it is scheduled on the right assets automatically, with no configuration.

Related Procedures

Stop Retyping Your PM Library

This procedure — and every other PM for your industry — is already built into ChatterFix. Pick your industry and it lands on the right equipment, on the right interval, in about three minutes.