How Does Furnace Filter Thickness Affect Airflow? | Repair & Replace

How does the thickness of a filter affect the airflow inside of a furnace?
Does a 1 inch furnace filter restrict airflow more than a 4 inch filter?

In this episode of Repair & Replace, Vance explains how the thickness of a furnace filter and the change in surface area affects the airflow. In some cases this can offset the restriction of a higher rated MERV filter but you might need to upgrade your filter housing.

To learn more about upgrading your filter, watch this guide:    • Furnace Filter Upgrade (What You Need...  

Need a replacement filter? https://www.amresupply.com/p/filters

AMRE Supply provides homeowners, service contractors, and property management with the parts and knowledge needed to get the best performance out of any property. Stocking the largest selection of appliance parts, heating, plumbing, lighting, and janitorial supplies, AMRE ships almost anywhere in Canada within 24 - 48 hours. Expert help is available online, over the phone or in person at one of the many locations across Canada.

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