Air filters are designed to capture airborne particles, but an HVAC system also needs appropriate airflow to operate properly.
This makes filter selection an important part of system maintenance.
Filtration and Airflow Work Together
A filter should be appropriate for the HVAC system rather than selected only by filtration rating.
The system needs to move air through the filter as designed.
Keep the Return Air Area Clear
Furniture, curtains, and other objects should not unnecessarily block return air openings.
Check the Filter Regularly
A filter that has accumulated substantial debris may affect the system's airflow.
Conclusion
Good HVAC maintenance involves balancing filtration needs with the airflow requirements of the system.
Always follow the HVAC manufacturer's recommendations when selecting replacement filters.