Uses true HEPA filtration, which removes at least 99.99% of all airborne pollen, dust, smoke, mold, bacteria, pet hair and dander.

Hunter air purifiers capture a wide variety of dust particles and irritating allergens, including smoke, pollen, dust mites, mold spores and pet dander. If you suffer from allergies, asthma or other respiratory problems, a Hunter air purifier can help you breathe easier today.
Hunter offers two full air purifier product lines: The QuietFlo™ True HEPA system for maximum cleaning performance and extended filter life, and the HEPAtech® system for more economical value. All are up to 99.97% effective at capturing airborne particles. All feature Hunter's popular slimline styling, which allows a unit to be placed flush against a wall or in the corner. And all feature famous Hunter performance and quality at an affordable price.
 

Hunter air purifier filters

Hunter manufactures two distinct lines of Hunter air purifiers – the QuietFlow line, and their so called HEPAtech line of air purifiers.

The Hunter HEPAtech system does not rely on HEPA filters, but uses a combination of cleaning technologies to keep the indoor air clean. The only filter that you may have to replace regularly are the charcoal filters.
However, you can save money if you are not concerned about odors in the house, as that is what these optional charcoal filters are used for.

The QuietFlow air purifiers are actually air purifiers that use HEPA (High Efficiency Particulate Arresting) filters, and these Hunter air purifier filters do have to be replaced regularly.

Some people claim that HEPA filters become more efficient with time. They reason that as the Hunter air purifier filter fills up, it will trap even smaller particulates.

This is simply not the case because the way a HEPA filter works is not by trapping a particle in between the fibers – like catching a fish in a net. Rather, the air flow will slip around the fibers, but because the particles can not change direction so quickly, they will hit the fibres and keep sticking to it.

Also, as the Hunter air purifier filter fills up, it will actually start to reintroduce some of the pollutants back into the air. Furthermore, HEPA filters tend to hold moisture, which acts as a breeding ground for mold, and this mold will eventually end up in the air