1. How to Install an Air Filter
How to Use

How to Install an Air Filter

Instructions to Properly Install and Replace Your Filtrete™ Filter.

Installing Your Filtrete™ Filter

Check out our easy, step-by-step installation instructions:

  • Step 1 Filter Installation

    Step 1

    Remove the plastic from the filter—don't remove the cardboard framing.

  • Step 2 Filter Installation

    Step 2

    Find the airflow arrow and point it toward the AC/heating blower.

  • Step 3 Filter Installation

    Step 3

    Insert the filter into its slot [central unit].

  • Step 4 Filter Installation

    Step 4

    Insert the filter into its slot [wall unit]

Replacing Your Filter

For maximum effectiveness, we recommend you change your filter at least once every three months. You may want to change the filter more frequently if:

- You are remodeling or there is any other kind of construction work in progress

- There is any furniture or drywall sanding in process

- You own pets

- Anyone in the home smokes

- There is a fan running continuously

IF YOU ARE LOOKING FOR MORE INFORMATION, CHECK OUT OUR FREQUENTLY ASKED QUESTIONS.

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Filtrete is a trademark of 3M.