CAUTION: Do not attempt to wash either the activated carbon pre-filter or the
HEPA filter. They are not washable and washing will damage the filters.
With proper maintenance, your Honeywell air cleaner is designed to provide years of
high efficiency air cleaning. Your Honeywell air cleaner contains two filters: one activated
carbon pre-filter and one primary HEPA filter.
The activated carbon pre-filter is the element of your air cleaner that helps reduce
normal household odors, captures lint and other large particles and helps protect the
HEPA filter. It should be replaced at least every 3 months. If there are heavy
concentrations of odors, smoke, or large particles in the home, you may need to change
the activated carbon pre-filter more often.
We DO NOT recommend operating the air cleaner without the activated carbon pre-filter
or without following the filter replacement guidelines. The HEPA filter may become
contaminated and begin to emit any odors captured.
The primary HEPA filter should remain effective for 1 to 3 years, depending upon the
environment in which the air cleaner is operating. Honeywell recommends changing the
HEPA filter based upon operation conditions–every 3 years for light usage, 2 years for
normal usage and 1 year for heavy usage.
Our recommendations regarding filter replacement intervals are intended as guidelines
only. Life expectancy of any filter media is dependent on the concentration of the
contaminants to which the system is exposed. If there are sources of large amounts of
contaminant generation (such as woodworking or heavy smoking) the useful life of the
filter media in your air cleaner may be reduced.
Whenever the combined air resistance of the activated carbon pre-filter and primary
HEPA filter becomes excessive due to the amount of contaminants they have captured,
the air cleaner will begin to audibly pulsate. Instead of a steady stream of air, rapid
"puffs" of air may be felt at the outlet slot. When this occurs, one of two conditions exists:
1. The activated carbon pre-filter is clogged and must be replaced.
2. If the unit continues to pulsate after a new pre-filter is installed,
the useful life of the HEPA filter has been reached and it must be replaced.