Each month when you change your furnace filter, spray it with a furniture polish first before installing. This will help trap more dust in the filter due to the oil base of the spray furniture polish. I use a cheap can of spray from the dollar store.
Source: My heating and cooling service man
By Judy from Kentwood, MI
Editor's Note: Make sure to read the label of anything you spray on an air filter to ensure it's safe to breath and non toxic.
RE: Furniture Polish Helps Catch Dirt on Furnace Filter
By (Guest Post)
A better way to trap more dirt is to buy a pleated air filter with a MERV rating of 8 or higher (the MERV rating will be shown on the filter and/or the packaging).
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