Trane CleanEffects™ provides whole-house filtration for indoor air. It utilizes patented air-cleaning technology to eliminate allergens and particles, such as dust, pollen, bacteria, pet dander, mold spores, and smoke. It is capable of removing up to 99.98 percent of particles and allergens down to 0.1 microns - equivalent to 1/1,000th the diameter of a human hair. The unit uses a patented ifD corona field to charge incoming air, causing particles to adhere to the CleanEffects collection cells as air passes through. Each layer of the collection element is only 0.08 inches apart and has alternating charges. The filters, which do not need regular replacement, are easily accessed by a front power door and can be simply vacuumed or washed with water.