The best air cleaning system on the market today is no longer a HEPA. Trane’s brand new CleanEffects air cleaner is actually better than a HEPA (commonly used in hospitals everywhere). CleanEffects is 99.98% efficient down to .3 microns and delivers 100 times the amount of clean air that a standard 1-inch filter does, not to mention eight times the amount of clean air of a HEPA system. The beauty of the Trane Clean Effects air cleaner is there are no filters to replace. You simply vacuum the unit out. Also, the CleanEffects unit comes with an indicator light that will notify you when it needs to be cleaned. You can get more information by going to www.trane.com or call our office at 614-784-9200.