The Filtrete 2500 Series 14x24x1 Furnace Filter by 3M is a high-performance HVAC air filter rated MPR 2500 and MERV 14, sold in a convenient 4-pack. Designed with exclusive Filtrete 3-in-1 technology, it captures unwanted particles from the air in your home while maintaining strong airflow through your heating and cooling system.

This filter achieves a 77% small particle capture rate for particles in the 0.3 to 1 micron range, capturing bacteria, virus-carrying particles (up to 90% of airborne virus particles based on MS2 virus testing), pet dander, smoke, and mold spores. It also traps larger particles including lint, household dust, dust mite debris, and pollen. The electrostatic pleated polypropylene design fits standard 14x24x1 filter slots in furnaces, central air conditioners, and HVAC systems.

For optimal performance, 3M recommends replacing this filter at least once every 90 days. The free Filtrete Smart App, available for iOS and Android, lets you set 30-, 60-, or 90-day change reminders. Filtrete is North America's most trusted HVAC filter brand, based on the 2024 Sago US Brand Health Survey.