TRANE CleanEffects uses patented, breakthrough air cleaning technology to remove up to 99.98% of airborne allergens from the air that passes through the filter, without significantly reducing the air flow, making it 8 times more effective than even the best HEPA room air filter and 100 times more effective than a standard 1" filter. TRANE CleanEffects is so effective that it traps allergens down to .1 microns, the size at which allergens cause the most irritation because your nose, mouth and throat can’t filter them and they get trapped deep in your lungs.