Commercial HVAC inspection checklist

Focus on dust accumulation, proper fit, and structural integrity. Check if airflow is restricted and if the filter frame is damaged. For pleated filters, ensure the pleats aren’t collapsed. Replace filters showing significant dirt buildup, as clogged filters force systems to work harder, increasing energy consumption and reducing equipment lifespan.

Dirty or clogged filters rank highest, followed by refrigerant pressure problems and electrical connection issues. Condensate drain clogs frequently cause water damage and mold growth. Belt wear and misalignment often go unnoticed until they cause component failure. Using this checklist helps identify these issues systematically before they lead to system breakdown or efficiency losses.

Check for consistent temperatures throughout your building, listen for unusual noises during operation, and monitor your energy bills for unexpected increases. The inspection checklist helps you verify proper refrigerant charge, clean heat exchange surfaces, and correct airflow—all critical efficiency factors. Measuring supply/return temperature differentials during the inspection provides concrete efficiency indicators.

Customize the checklist based on your needs, then complete every section of the checklist, including the general information fields. Take photos of concerning components and note specific measurements where applicable. This documentation helps demonstrate compliance with building codes, insurance requirements, and equipment warranty terms while creating a valuable maintenance history.