Media air cleaners rely on a high-efficiency, pleated media to remove particles. The media combines the four principles of filtration (straining, impingement, interception and diffusion) for particle removal.

A direct benefit of the size of the media, as much as 78 sq ft in some instances — is high efficiency and resistance.

Efficiency and affordability are reasons why some allergists recommend media air cleaners. A media air cleaner can reach 95% efficiency on particles 1 micron in size and 99% efficiency on particles 5 microns or larger.

To put this in perspective, pollens and spores, the cause of many allergies, are normally 10 to 100 microns in size. High efficiency levels are also maintained because media efficiency actually increases as it loads.

Installation

Installation requirements include securing the unit between the forced-air system and the ductwork, with no electrical wiring required.

The lack of electrical components also reduces the potential for mechanical breakdown which, in turn, reduces the number of dealer callbacks. Because of this, most manufacturers offer some type of extended warranty.

Most consumers appreciate that the only maintenance requirement is the changeout of the media every one to two years. Because media replacements are sold through dealerships, it will result in a steady profit margin for dealers.

For more information, contact Research Products Corp., maker of Space-Gard high-efficiency air cleaners, at 800-334-6011.