How Electrostatic Filters Work. An electronic air filter uses static electricity to give particles a positive charge as they enter the filter. This charge is released as the air continues through subsequent layers of the filter, and results in the particle ultimately getting trapped.

Do electrostatic filters really work?

Electrostatic air filter devices do work fairly well to filter allergens from the air, because they filter particles like dust, pet dander, or mold, which are the usual suspects when it comes to allergies. ... For an electronic air cleaner, the large particles are given enough charge for them to be captured well.

What are the benefits of electrostatic filters?