Housekeeping · 냉난방 필터

Ducted HVAC Filters: 6 Steps for Inspection and Replacement

Check ducted HVAC filters monthly and follow the manufacturer’s replacement schedule. Three months is a common baseline, but conditions and systems differ.

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ENERGY STAR

ENERGY STAR information on checking and changing HVAC filters.

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This guide covers ducted HVAC return-air filters using ENERGY STAR and EPA advice; it may not apply to washable mesh filters in wall-mounted air conditioners.

Your try-it-at-home checklist

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1. Use the equipment manual to find the filter and confirm its dimensions and whether it is disposable or washable.
2. Inspect monthly; if heavily soiled, consider replacing it sooner than the usual interval.
3. Switch off the system and access only the filter cover intended for users. Do not open electrical panels or deep ductwork.
4. Match the new filter's dimensions and airflow arrow with the existing unit and instructions; do not crush it or leave gaps.
5. Replace disposable filters as specified, and never wash a filter unless its manufacturer explicitly permits washing.
6. Close the access panel and check normal airflow. Ask a qualified HVAC technician before switching to a higher-efficiency grade.

ENERGY STAR information on checking and changing HVAC filters.

Your try-it-at-home checklist

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