Electrostatic Air Filters: How Do They Work?
Electrostatic air filters are a very effective way to improve the indoor air quality in your home. If you are considering an air filtration system for your home, you may be looking for some information about this type of filters and how they are different than other filtration systems.
What Are Electrostatic Air Filters?
Electrostatic air filters look similar to the normal air filters you may have seen installed in air conditioning and heating vents. They come in a wide variety of shapes and sizes designed to fit any ventilation style layout or configuration. They are 1/2- to 1-inch wide and contain several layers. The first layers, those closest to the air flow, are made of a combination of polyurethane and polypropylene fibers woven tightly together. The outer layers are made of polyester mesh. Both sides of the filter are covered in aluminum grates to keep the filter rigid.
How Do They Work?
Unlike traditional air filters that simply trap dust and other particles as the air passes through them, the unique blend of materials used in these filters creates static electricity. This static gives each of the filter’s layers an electric charge, alternating between positive and negative. These charges are passed onto any particles that pass through them. As they pass through the positively charged layer, the particles pick up a positive charge which then causes them to be attracted to the negatively charged layer like a magnet to your refrigerator.
This process makes these filters much more effective than traditional air filters which can only remove particles that are large enough to get stuck in their layers. Electrostatic air filters are so effective they can even remove tiny irritants, like smoke and other odor causing particles from your air.
If you have more questions about electrostatic air filters or other ways to improve your indoor air quality, contact us at Air-Tro Inc. We have helped the folks of Pasadena and the entire Greater Southern California area breath easier in their homes for more than 45 years and would like to do the same for you.
Our goal is to help educate our customers in the greater Monrovia, California area about energy and home comfort issues (specific to HVAC systems).
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