Ensure optimal air quality. Polishing operations and bench work create a great deal of dust, some harmless and some toxic. Many dust collectors pick up much of the dust at the source, but polishing operations also allow a substantial amount of dust to become airborne and settle around the shop.

Fresh-Air Series Air Purifiers capture airborne dust and other contaminants in an advanced three-stage filtration system, then recirculate clean air back into the room. All provide complete room air exchange approx. 15 times per hour. Each includes smooth casters for easy relocation to dusty areas. Electrical: 120V (240V available upon request).

Backed by a two-year manufacturer’s warranty. Made in Canada.


Available in 4 sizes based on the size of your room. See “Specifications” tab above for details on individual models.

All units feature a 3-stage filtration system:

  • Stage-1 Prefilter — Captures the biggest particles, prolonging the life of subsequent filters. Inexpensive and easy to change.
  • Stage-2 HiCap Filter — Provides high-capacity particle retention.
  • Stage-3 HEPA Filter — Picks up 99.99% of 0.3 micron particulate, including soot and pollen. Recirculates clean air back into the room to help minimize heating and AC costs. Replace every 3 to 5 years depending on use.


Model: 400 600 1000 2000
Room Size:*
250 sq. ft. 400 sq. ft. 600 sq. ft. 800 sq. ft.
Electrical:** 120V 120V 120V 120V
Amperage: 0.6 Amps 1.0 Amps 1.6 Amps 2 Amps
Width: 13″ 22″ 22″ 24″
Depth: 16″s 16″ 16″ 126″
Height: 28-1/2″ 37″ 52″ 71″
Net Weight: 63 lbs. (33 kg) 119 lbs. (68 kg) 190 lbs. (198 kg) 320 lbs. (145 kg)

* Based on 8 foot ceiling height.

** 240V available upon request. Please email us at info@gesswein.com or call 1-800-243-4466 (M-F, 9am – 5pm EST)

About HEPA Filters

HEPA (High Efficiency Particulate Air) filters are designed to capture the submicron particles that tend to pass straight through traditional Ashrae-rated filters. These particles—which can come in the form of powders, aerosols, fumes, smoke, molds, spores, bacteria and more—bypass the human respiratory system’s natural defenses, penetrating deep into the lungs where they cannot be expelled and raising long-term health concerns. For this reason, HEPA filters are critical to ensuring safety in environments where small particulate is generated. It is no coincidence that allergists, asthma specialists and air filtration specialists alike recommend HEPA filtration.

Note: When working with materials that contain silica, such as investment or tripoli, it is wise to wear a properly-rated respirator if exposure levels are high. Airborne respirable silica can be captured with a vacuum or air purifier containing a HEPA filter.

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