enviracaire HEPA Air Cleaner
#1 Choice of
* Riter Research Inc.
"Portable Room Air Cleaners Physician Preference Study"
How Can You
Measure Air Cleaner Performance?
particle removing performance is determined by two important factors: filter effectiveness
and air circulation capacity.
effectiveness is the percentage of particles that the filter removes from the air that
passes through it. Honeywell HEPA filters provide a minimum
effectiveness of 99.97% in filtering out particles of 0.3 micron size from the air that
passes through it. Particles of 0.3 micron size are the most difficult to remove from the
air, and are used specifically in testing true HEPA filters.
To assure that
incoming air does not leak around the HEPA filter, Honeywell HEPA filters are quality constructed with a sealed air flow system.
Honeywell's Surround Seal - HEPA filter technology assures that virtually all of the air
that is drawn into the air cleaner passes through the HEPA filter.
The second most
important factor in air cleaner performance is its air circulation capacity - the amount
of air drawn through the filter. Air circulation capacity is measured in Air Changes per
Hour (ACED). Each air change represents circulating the volume of air in the room through
the air cleaner one time. All of the air in the room will not immediately be processed
through the filter. However, the more air circulated through the filter, the more air
Air circulation capacity determines the particular
room size for which the air cleaner is appropriate. While many air cleaners are rated on 3
air changes per hour, Honeywell recommends its room sizes based on 6 air
changes per hour. This more stringent standard for selecting the correct air cleaner for
your room size may be more appropriate for allergy and asthma sufferers who may require
more effective air cleaning performance.