Hepa Air Quality Systems HEPA (High Efficiency Particulate Air) filters have the capability of trapping extremely small particles, including those less than 1 micron in diameter. This represents an extremely high filtration capability. HEPA units are usually constructed with a prefilter of some type so that the HEPA filter does not become quickly clogged with larger particles. Featured Product Honeywell F500 
For the ultimate clean air, count on the Honeywell f500 Whole-House HEPA Air Cleaner. HEPA stands for high-efficiency particle arresting, which most physicians recommend for allergy treatment programs. The Honeywell F500 Whole-house HEPA Air Cleaner provides powerful, 3-stage filtration to deliver the cleanest air possible throughout your home. Key Features Meets American Lung Association® Health House® guidelines. Three filter system. Activated carbon, pre-filter, HEPA filter. Easy to maintain. Free AIRWATCH™ Indicator reminds you when to change filters. 5-year warranty
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