HEPA Filters HEPA stands for High-Efficiency Particle Arresting, which is the standard that achieves 99.9% air filtration. The Honeywell Whole-House HEPA Air Cleaner provides powerful, 3-stage filtration to deliver the cleanest air possible throughout your home.

When used in the home, HEPA filters have been found to have one or more of the following benefits:
Reduces the frequency of sinus and respiratory infections often caused by airborne opportunistic fungal mold and
bacteria.
Reduces Severity and Frequency of allergic symptoms caused by airborne particles and gases, (i.e., sinus congestion,
headaches, sneezing, watering eyes, asthma, etc.)
Helps many people sleep restfully through the night who have chronically been unable to do so.
Many asthma sufferers have been able to breathe more easily, often without the aid of inhalers or medication
HEPA filters, combined with the proper amount of activated carbon, provide relief for chemically sensitive people.