Q:

Where can you purchase furnace filters?

A:

Quick Answer

As of March 2015, furnace filters are available in stores such as Walmart, Ace Hardware and Home Depot. These stores also sell filters online. Furnace filters are also available through websites such as Amazon.com.

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Full Answer

To maximize a furnace's efficiency, it's important to choose the right type of filter. For example, low-efficiency filters lack significant dust filtering capabilities, while high-efficiency filters may slow airflow. Family Handyman recommends choosing a filter with a minimum efficiency reporting value (MERV) of 7 or 8 because it balances efficiency with cost and works well for most homes. Cheaper filters with a lower MERV typically lack the filtering capacity for smaller particles.

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