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How to Change the Filter in Your Furnace
How to Maintain Hot Water Heating Systems
Proper Ventilation for Your Home

How to Change a Furnace Filter

A clean furnace filter traps dirt and allergens and makes your furnace run more efficiently — and last longer. This video shows you how to remove the furnace door panel, find the filter, and replace it with a new one. Replace furnace filters every month for best results.

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