Q:

How do electrostatic air filters work?

A:

Quick Answer

Electrostatic filters use polypropylene and polyurethane materials that create static electricity when air particles pass through them. The static electricity attracts and traps the air particles in the filter.

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Full Answer

Electrostatic filters can remove particles as small as 0.3 microns, which is 1/25,000 of an inch. For the purpose of comparison, a dust mite can be 100 to 300 microns, and staphylococcus bacteria is 0.7 microns. Particles between 0.3 microns and 0.9 microns pose the greatest risk to human health. The problem is that the particles within that range are too small for the tiny hairs that line the nose to filter but large enough that they cannot be exhaled. The health benefits are the biggest selling point of an electrostatic filter. People with asthma or allergies would benefit the most because it traps all of the dust, mites, pollen, mold and plant spores and pet dander.

Electrostatic filters also provide economic benefits. Electrostatic filters can be washed hundreds of times with mild soap and water and reused, according to Networx Systems. Standard paper filters cannot be reused. This equates to less money spent on air filters. The electrostatic filters help keep air ducts cleaner, requiring less money spent on contractors to clean the ducts. This also lowers the amount of dust in the house, which means less dusting. The air conditioner coils are cleaner, meaning that the system runs at optimal efficiency, also saving money in the long run.

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