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How to Change a Furnace Filter
Troubleshooting Your Central Air
Installing a Vapor Barrier in Your Crawlspace

How to Change the Filter in Your Furnace

Step 1 of 3
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Locate the furnace filter compartment.

You can usually find it near where the cool air enters the furnace — the air return duct or at the entrance to the blower chamber. Sometimes there's a filter in both locations.

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