Filtrete Air Filter

A MERV 12 rating indicates that this filter is highly effective at capturing fine particles. It is capable of trapping not just dust, but also smaller airborne contaminants like mold spores, pet dander, and pollen, making it a strong choice for households concerned with respiratory health.

This filter measures 25 inches by 20 inches with a 4-inch thickness. Before purchasing, check the slot in your furnace or air handler to ensure it accommodates a 4-inch deep-pleated filter, as standard systems often use thinner 1-inch filters.

The deep-pleated architecture increases the total surface area of the filter media. This allows the filter to capture more particles without restricting airflow, which helps your HVAC system run more efficiently compared to flatter, less dense filters.

While replacement frequency depends on your home's specific environment—such as the presence of pets or high dust levels—these filters are generally designed to last up to three months. We recommend checking them visually every two months to see if they have accumulated significant debris.

Yes, this filter is compatible with standard furnace, air conditioning, and heat pump systems. As long as your system's filter housing matches the 25x20x4-inch dimensions, it will function effectively across all these units.