Before you crank up
your furnace this fall,
take the time to change the furnace filter. They're pretty cheap and usually available in quantity packs from hardware and department stores. Replacing the furnace filter at least once a month both
improves furnace efficiency and can help relieve allergy symptoms. When filters are clogged with dirt and particles, and air can't flow through easily, the furnace has to work harder. Clogged, the filter loses its ability to remove more particles from the air. (It's a season pass to sneezyland.) Plus, a furnace that does not work efficiently will cost you more on home heating. Follow the tips below for quick and easy furnace filter replacement.
Look at the old filter. To know what type and size of filter you need, pull out the old one, located at an easy-to-find spot on the furnace. For easy replacement, note how the old filter was inserted. Most filters have an arrow and top/bottom noted to make it easier to insert correctly into the furnace. The size and type will be marked on it. Be careful to note the full dimensions, as even thickness is important. You can bring the filter with you to make shopping easier.
Filters to relieve allergy symptoms. The 3M Company makes a Filtrete® Micro Allergen Reduction filter that provides better filtration of dust and other allergens. They cost slightly more than regular filters, but last longer and provide better filtration.
About washable filters. There are some filters that are washable, but the low cost far outweighs the time spent trying to clean and remove the particles.