Maintenance Guides / HVAC & Air Quality

Clean return air grille filters

Difficulty: easyTime: 20 mins

Why it matters

Return-grille filters trap debris upstream of the main blower; clogged grilles reduce airflow.

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How to do it

  • 1

    Locate all return air grilles in walls or ceilings.

  • 2

    Turn off HVAC.

  • 3

    Vacuum grille face with brush attachment.

  • 4

    Remove pre-filter panels and check for dust.

  • 5

    Replace disposable filters or clean reusable ones.

  • 6

    Restore HVAC and verify airflow.