Air Filters Made in the USA. Free Shipping to the mainland USA.*
Permatron DustEater® Easy Flow Washable Electrostatic Air Filter

Permatron DustEater® "Easy Flow" High Air Flow - 1" or 2" Thick

Regular price $69.88 Sale


Shopify secure badge

Free Shipping! Choose your size in the dropdown menu above.

DustEater® Easy Flow Washable Electrostatic Air Filter

All filters undersized by 1/2" on the length and width as is standard for filter sizing, please measure your current filter.

  • DustEater Easy Flow (Model EF), our low-resistance-to-air-flow electrostatic air filter, contains wire reenforced polypropylene in a stainless steel frame. The Easy Flow model is ideal for heat pumps, sensitive 90+ furnaces, and older systems with limited air flow.
  • Stainless steel frame with drain holes
  • Average Arrestance Efficiency: 82% 
  • Dust Holding Capacity: 105 gm. 
  • Initial Air Flow Resistance: 0.11” w.g. 
  • U/L Classified as to Flammability Only 
  • Lifetime Warranty

DustEater Features A Proven Air Filter Design

Permatron’s DustEater is arguably the most effective washable electrostatic air filter manufactured in the U.S.A. for residential use. This air filter has been used successfully in residential furnaces for over 30 years, but the electrostatic air filter design, featuring our exclusive Accumulator Chamber construction, was originally designed for commercial applications over 50 years ago.  Designed to extend the working life of the air filter between cleanings, the Accumulator Chamber protects against dirt face loading.   Whether for standard furnace sizes, or custom built to meet a specific requirement, DustEater air filters are extremely effective electrostatic air filter for use in the home.

Accumulator Chamber Design

How the Accumulator Chamber® Works

Utilizing two electrostatically charged fabric panels separated by our unique Accumulator Chamber produces a very effective three-stage air filtration process for residential applications. The first air filter media panel (the prefilter) attracts and holds airborne particulates. The filter fabric’s inherent electrostatic charge enhances filtration by drawing particulates onto fiber surfaces like a magnet. Static electricity does not discharge over time because the air flow helps it maintain the charge – nor does it require insulation or grounding. When particulates build up on the DustEater’s prefilter, airflow forces them to break off and collect in the Accumulator Chamber, where turbulence and electrostatic forces cause agglomeration into even larger particulates. These agglomerated particulates are too large to pass through the second panel (the afterfilter). DustEater’s afterfilter attracts and holds the smaller particulates that may have escaped the prefilter, or particles that do not respond to an electrostatic charge.

A note about washable filter frame thickness:

All washable filters have the same amount of filtering media no matter the thickness of the filter frame. The frames are available in many sizes to allow users to install the filter into varying widths of tracks, slots, grilles, etc. This eliminates the need for modification of the track/slot/grille/etc. when switching from one type of filter to another, i.e. switching from a 2" thick pleated filter to a washable filter. All washable filters must be washed monthly; so they are made with enough media to work as designed and allow for proper dust holding capacity until the monthly wash is required. A thicker frame on a washable filter does not contain more media nor is the media doubled up or thicker in any way. The advertised efficiency and air flow remains the same throughout all thicknesses of washable filters in each of their respective LxW dimensions. In filtration, the efficiency is the particle size a filter will capture.