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How to Make a Home Air Filter

This simple air filter is constructed from a box fan and disposable furnace filter. The filters on your furnace and air conditioner will help pull some of the dust and pet hair out of the air, but even if they run full-time, their capacity is limited. By making a second, independent air filter, you can increase the amount of filtered air in your home.

Things You'll Need

  • 20-inch box fan with variable speeds
  • 20-by-20 inch furnace filter
  • Duct tape
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Instructions

  1. How to Make a Home Air Filter

    • 1

      Using small strips of duct tape, affix the filter to the intake side of the fan.

    • 2

      Turn the fan on to its lowest setting.

    • 3

      Place the fan in a bedroom, to help you breathe easier while you sleep; in a basement, to filter out mold spores that can cause allergies; or in an open window (facing inward).

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Air Purifiers
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  2. How to Repair a Honeywell Air Purifier
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  5. How to Make an A/C Vent Filter
  6. How to Choose an Air Filter System for the Home
  7. How to Make a Humidifier Filter
  8. How to Replace an AC Filter
  9. How to Install My Air Filter
  10. How to Make Moist Heat at Home
  11. How to Make a Homemade House Air Filter
  12. How to Make an Air Scrubber for Home Use

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