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How Do the Technologies Differ

True HEPA 

The Doctor's Choice1

  1. The Technology that is most often recommended by Physicians1.
  2. Captures up to 99.97% of airborne allergens, 0.3 microns or larger, from the air that passes through the filters.
  3. Mechanical Filtration (particles are forced through and trapped in a high efficiency filter).
  4. HEPA Filters are replaced approximately once per year.
  5. Includes odor absorbing pre-filter (replace once every 3 months).



QuietClean® & AirGenius

  1. Best Technology for general air cleaning, featuring permanent, washable primary filters.
  2. QuietClean® captures up to 99% of larger particles, from the air that passes through the filters. AirGenius captures up to 99.9% of particles, 0.3micorns or larger that passes through the filters.
  3. Exclusive Honeywell Air Purifier Technology – Patented ifD® filter
  4. Electronic Filtration (captures particles are attracted to and captured by the ifD® filter.
  5. Permanent filter, simply rinse or wash clean.
  6. Optional odor absorbing pre-filter.



  1. Good technology for general air cleaning.
  2. Captures up to 95-99% of airborne particles, 2 microns or larger, from the air that passes through the filters.
  3. Mechanical filtration with optional on-off ionization (particles are forced through and trapped in a filter).
  4. Filters typically need to be replaced once every 4-6 months.
  5. Optional odor absorbing pre-filter.



How Are All Honeywell Air Purifiers the Same?

They all use a fan to:

  1. Pull dirty, stale air into the unit.
  2. Force the dirty air through a filter that captures pollutants.
  3. Return cleaner, fresher air back into room.



TRUE HEPA                   

99.97% @ 0.3 microns

1. The “gold standard” in air purification.

2. Filters capture up to 99.97% of microscopic particles (as small as 0.3 microns in size, form the air that passes through the filter).

3. Includes odor absorbing pre-filters.






95-99% @ 2 microns

  1. HEPA-Type filters capture up to 95-99% pf particles (as small as 2 microns in size from the air that passes though the filter).
  2. Includes optional on-off ionization to boost cleaning power.
  3. Odor absorbing pre-filter can be purchased separately. 



Best – 99.9% at 0.3 microns (featured in Air Genius products)

Better – 99% @ 2 microns (featured in QuietClean® products)




1 Based on Nov 2014 Cascade Survey Research results  reporting 148 out of 171 (87%) surveyed physicians that recommend portable air purifiers to their patients, recommend True HEPA or HEPA-TYPE air purifiers.