Air Purifiers: Electrostatic Air Filters

Electrostatic filters are made to charge dust particles in the air which will attract them to the metal plates in the machine.  The machines are made up of layers of polypropylene and polyurethane material that generate the electrical charge to attract dust particles.  They attract particles as tiny as 0.3 microns.  They are compact enough to fit over windows, air conditioner, and central furnace vents.  There are two kinds of filters, permanent electrostatic filters and disposable ones.  The permanent filters should be maintained properly to assure that the machine will work properly.  They have to be cleaned with mild soap and water every 3-4 weeks. 
The disposable filters just need to be replaced as needed, especially when it has already collected large amounts of dust.

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