#1 Recommended Brand* (*Filtrete Brand is the most recommended brand of HVAC Air Filters based on the US Filtrete Brand Health Tracker, Ipsos, June 2022)Bluetooth®- ENABLED SENSOR to track filter life based on data from your home's HVAC system. Track the life of your filter based on air flow and usage - not just time. So you never have to worry about change your filter too early or too lateOPTIMIZE FILTER CHANGES for proper HVAC system maintenance. Receive alerts directly to your smartphone when it's time to replace your air filterFILTER SIZE & TYPE, access information in the app to remind you of your specific filter types & sizesREPLACEMENT MADE EASY, shop by filter size in the app, chose your preferred retailer, and have it shipped directly to your homeOUTDOOR WEATHER & AIR QUALITY, see outdoor air quality information for your neighborhood and other chosen locationsFiltrete⢠SMART APP is available on iOS and AndriodATTRACTS AND CAPTURES microscopic particles such as smoke, cough and sneeze debris, bacteria and viruses--and large particles, including lint, household dust and pollen