A furnace filter should be changed about once every three months. A furnace filter should be changed more often in the event of pollen, construction dust, cold spells, or other amplifying factors.
Even in the warmer months of the year, you should regularly monitor your furnace filter's condition -- and replace it as needed -- to keep your family safe and your furnace in good working condition.
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How to Change a Dirty Furnace Filter

If you’re thinking you only have to change your furnace filter once a year, you may be shortening the life of your furnace.
KANSAS CITY, Mo. (KCTV) - One of the quickest and easiest ways to improve energy efficiency in your home is to regularly change your furnace filter. Follow these easy steps to have an efficient and ...
Between the rising cost of living, high-profile layoffs and a tumultuous investment landscape, many Americans are looking for ways to cut their spending and live more frugally. Unfortunately, with ...
Changing your furnace filter is one of those home maintenance chores that's easy to forget until you've got a problem. Typically located in tucked-away spots like a basement, crawlspace, or attic, ...
How often should I swap out my furnace filter, and which types of furnace filters are best? A furnace filter removes dust, dander and other large particulates from the air in our homes when either the ...
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TORONTO – If you’re like most people, you probably don’t give your furnace much thought as long as it’s keeping you warm in the winter and cool in the summer. But in order to keep it working to its ...
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