Replacing Your Furnace Filter
Pretty soon it will be time to turn off your heat and start using your air conditioner. The first thing you will need to do is replace your furnace filter. There are many styles of filters, including ones that specifically filter for allergens. First you need to know how to replace them, and how often.
“What kind of filter do you have? Start by turning off the furnace. Remove the existing furnace filter, which will be located inside the furnace or inside the return air vent. Look for an arrow on the filter indicating airflow direction. Using a permanent marker, draw the airflow direction on the outside of the furnace, so you'll always know the right way to install the filter. Then note the furnace filter size, which will be printed on the cardboard frame.”
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