The Tier1 24x24x1 furnace air filter carries a MERV 13 rating, equivalent to MPR 1500-1900 and FPR 10. This high-efficiency pleated filter captures airborne particles as small as 0.3 microns, including pollen, dust mites, pet dander, mold spores, smoke, bacteria, and virus carriers, making it ideal for households with allergy sufferers or pets.

The Tier1 24x24x1x1 filter measures approximately 23.5" x 23.5" x 0.75" (actual size) to ensure a proper fit in nominal 24x24x1 HVAC systems. Tier1 recommends replacing this pleated filter every 90 days under normal conditions. Homes with pets, smokers, or heavy dust should replace it every 30-60 days to maintain optimal airflow and filtration efficiency.

This Tier1 filter features electrostatically charged synthetic pleated media supported by a beverage-board frame and reinforced with a galvanized metal wire backing for structural integrity. The deep pleats increase surface area, allowing greater dust-holding capacity and lower pressure drop compared to standard fiberglass filters, so your HVAC system runs efficiently without overworking the blower motor.

Yes, the Tier1 24x24x1x1 fits any residential forced-air furnace, central air conditioner, or HVAC system designed for a nominal 24x24x1 filter slot. It works with major brands including Carrier, Trane, Lennox, Goodman, Rheem, York, and American Standard. Always check the airflow arrow printed on the frame and point it toward the blower during installation.

The Tier1 24x24x1 MERV 13 filter is engineered with high-loft pleated media to deliver advanced filtration while maintaining proper airflow in most residential systems. Its low initial resistance prevents strain on the blower motor. However, for older or low-static HVAC systems, monitor performance and replace the filter promptly once loaded to avoid reduced airflow or system strain.