The purifier's IFD filter removes 99.97 percent of all airborne particles that pass through, such as pollen, cat dander, household dust, tobacco smoke, and mold spores. No more dust particles in that glint of sunlight, this Honeywell is equipped with a built-in ionizer that grounds airborne dust for quick vacuum cleanup. An electronic filter-check indicator shows when it's time to clean the pre-filter. Plus, an LED touch-button control offers three fan speeds for fast filtering and whisper-quiet air purifying.

Another advantage of the Honeywell HFD-120-Q is that there are no maintenance costs. With other air purifiers, filters would need to be replaced once every 6 months as they will lose efficiency. These filters can cost up to $20 to replace. However, the Honeywell HFD-120-Q is equipped with a Permanent IFDAir Purifier filter which is washable and vacuum-able which means it never needs replacing.

Honeywell HFD-120-Q Product Features

• HEPAQuiet air purifier with permanent pre-filter for medium rooms up to 186 square feet
• Electronic filter check indicator for easy maintenance
• Captures dust, pollen, cat dander and tobacco smoke
• Built-in ionizer grounds airborne particles for easy vacuum cleanup
• Dimensions: 28.7 by 11.22 by 10.04 inches; weighs 13 pounds

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Honeywell Black 120V Electric Quietclean Tower HEPA Air Purifier    US $169.99

Honeywell HFD 120 Q Air Purifier    US $99.99

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Honeywell HFD-120-Q Tower HEPAQuiet Air Purifier is a post from: Air Purifier Ratings

The material used in HEPA air purifiers is made of fiber or polymers. It traps the microscopic particles that are present in the air. Apart from trapping dust, HEPA air purifiers are also able to contain mold spores, many types of bacteria and viruses. There are many brands of HEPA air purifiers available in the market and most of them claim to be 99.97% effective in filtering particles as small as 0.3 microns. However the truth is that HEPA air purifiers can only filter air that flows through it, so this claim may not be true in the case of all HEPA air purifiers. This is because many of them are not well designed and allow the airflow to pass around the filter and return to the room without being cleaned.

For absorbing gases, odors and chemical, HEPA air purifiers generally use activated carbon based material. They can be of different kinds like a thin mat in the Air-O-Swiss filter or many pounds of activated carbon as present in Austin Air Purifier.

HEPA air purifiers are commonly used in vacuum cleaners, they have beneficial effects on people who suffer from certain kinds of allergies, like asthma because they can trap pollens and dust mite feces which are known to cause allergic reactions in susceptible people.

Though these air purifiers can be extremely helpful, consumers should be careful while buying them, because several such products in the market are advertised as HEPA-like, HEPA Type and even 99% HEPA. Now these products would never even come close to giving results that could be obtained from true-HEPA filters. True-HEPA filters are designed in such a way that they do not let any air leak out while passing though it. They are also called ‘Sealed HEPA’.

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HEPA Air Purifiers is a post from: Air Purifier Ratings