Nordic Pure Pleated AC Furnace Filter

The nominal size (20x20x1) is the industry-standard label used for shopping, while the actual size (19 1/2 x 19 1/2 x 3/4) represents the precise physical dimensions. Always measure your current filter or the filter slot to ensure the actual dimensions will fit your specific unit.

MERV 12 is a high-efficiency rating capable of capturing fine particles like smoke, pet dander, and mold spores. Before installing, check your HVAC system's manual to ensure it can handle the increased airflow resistance that comes with a higher-rated filter.

For optimal performance and to prevent strain on your HVAC system, replace these filters every 1 to 3 months. If you have pets, live in a dusty area, or suffer from severe allergies, you may need to change them more frequently.

Yes, the MERV 12 pleated media is designed to trap common household allergens, including pollen, dust mites, and pet dander. It is an effective choice for improving indoor air quality for those with moderate allergies or asthma.

The electrostatic charge is built into the synthetic fibers to help attract and hold smaller particles that might otherwise pass through. While the charge remains effective throughout the filter's recommended lifespan, it will naturally lose its efficiency as the filter becomes loaded with trapped debris.