filter rack

Which Way to Install Your Pleated Air Filter

Question: I have pleated air filters for my furnace that have a wire meshing on one side. Which way does the filter go in the furnace with regards to airflow direction. With the wire side opposite of airflow or on the same side as the direction of airflow? Also, for replacement, what Merv value should [...]

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Can I use pleated air filters in my Honeywell electronic furnace filter?

Using pleated air filters in a honeywell electronic furnace filter instead of the electronic cells is very common. Usually a 4 inch thick pleated filter will fit into the opening. Sometimes 5 inch thick filters are required.

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How to Determine Furnace Filter Size

Question: I measured the metal frame of my furnace filter at 19 1/2 x 24 1/2 x 3/4 inches but after looking closer at it I saw a measurement of 20 x 25 x 1 on the frame.  Now I’m not sure what size filter to replace it with. Shopping for a new air filter [...]

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