Filtrete 20x21.5x1 AC Furnace Air Filter – MERV 8, MPR 700, 4-Pack, 3-Month Pleated Electrostatic Filter

Overview

The Filtrete Dust, Pollen, and Pet Dander Air Filter is designed to work with your heating and cooling system to attract and trap a broad range of particles as air passes through. With a compact 4-pack, this solution supports a steady replacement cadence for busy homes. Although common non-electrostatic filters can miss finer particles, this electrostatically charged design aims to capture more particles in each cycle, helping to keep indoor air moving through your system with less resistance.

Built with telegraphed performance in mind, the Filtrete filter carries a MERV 8 / MPR 700 rating, indicating a layered approach to particle capture while maintaining dependable airflow. It is designed to target multiple particle types and sizes that can circulate in household air, providing a practical balance of filtration and airflow for standard residential use.

Key benefits

• Electrostatic, 3-in-1 filtration technology cards particles and helps keep air moving freely through your HVAC system.
• Captures a variety of particles, including pollen, pet dander, dust, and lint, with a broad filtration range.
• 4-pack delivers consistent replacements every 90 days for typical household use, helping you stay on track.
• Filtrete Smart App integration allows you to scan the filter barcode and set a 30/60/90 day countdown for changes.
• Compared to fiberglass, washable, and non-electrostatic filters, this pleated design aims to provide enhanced particle capture for a full season of use.
• 3-in-1 Filtrete technology traps particles while still promoting clean airflow through your furnace or air conditioner.
• MERV 8 / MPR 700 rating places it in a widely used range for mid-level filtration, handling a broad spectrum of particles on every pleated filter.
• North America’s trusted Filtrete brand is recognized for HVAC filtration, backed by consumer brand health insights.

Pack, size, and practical usage

• Included: 4 filters designed for 1-inch filter slots in residential HVAC setups.
• Actual size notes: practical fit for standard 1-inch housings, with design intended to balance filtration and airflow.
• Easy replacement cadence helps you maintain airflow and particle capture without guesswork.
• Designed to perform across typical daily activities, from routine cleaning to allergy seasons.

Real-life use and expectations

In busy homes, this Filtrete filter can work alongside routine cleaning to reduce visible dust and contribute to a more consistent air flow through your vents. While results may vary by home environment, many users find the 4-pack approach convenient for maintaining a steady replacement schedule. The filter’s electrostatic design is intended to attract a range of common indoor particles, which can be beneficial during high pollen periods or in homes with pets.