Check out this video for great information on the iWave product line.
The iWave is a great add on to any system.
iWave-R is the world’s first self-cleaning, no maintenance needlepoint bi-polar ionization generator designed specifically for treating air in residential duct systems. As the air flows past the iWave-R, positive and negative ions actively purify the supply air, killing mold, bacteria, and viruses in the coil and living space. The ionization process also reduces allergens, smoke, and static electricity, as well as controlling odors (cooking, pet, VOCs) and other particles (no more sunbeams) in the air without creating ozone or any harmful byproducts.
I have this system in my house. When I installed the unit I removed a 4 month old filter from my furnace, and installed a new filter. 3 months later I removed that filter to find that it was noticeably dirtier then my 4 month old filter. I have found that I no longer have sun beams coming through my windows. (my air is cleaner).