Filtrete 10x20x1 AC Furnace Filter MERV 11, MPR 1000, Micro Allergen Defense – 4 Pack (Actual Size 9.81x19.81x0.81 in)

Cleaner air for everyday living

Upgrade your home environment with the Filtrete 10x20x1 MPR 1000 Micro Allergen Reduction filters. This four-pack is designed for convenience and dependable performance, pairing with your HVAC system to support cleaner air flow while targeting a broad spectrum of common airborne particles. The 4-pack format makes it easy to stock up, swap in multiple rooms, or keep a ready replacement on hand for busy homes.

How it works

At the core is electrostatic media that behaves like tiny magnets. The filter uses both positively and negatively charged fibers to attract and hold microscopic particles as air passes through. With a 1000 MPR rating and a MERV 11 efficiency level, it targets a wide range of contaminants from everyday dust to pollen, pet dander, smoke, and mold spores. The result is air that can feel crisper as it moves through your living spaces.

• Electrostatic design enhances particle capture for improved filtration efficiency
• 3-in-1 technology pulls in particles at multiple sizes for broader protection

What you receive

Each filter in the pack is a pleated 1-inch filter with an actual size of 9.81 x 19.81 x 0.81 inches, slightly differing from the nominal 10 x 20 x 1. This precise fit helps ensure the filtration media remains evenly across the surface for better air contact and reduced bypass.

• Four filters in a single purchase for convenience and savings
• Filtrete media is electrostatically charged to attract and capture particles

Practical benefits for homes like yours

In homes with pets, during peak pollen seasons, or in areas affected by smoke or smog, you may experience a perceptible improvement in air quality after a filter change. While individual results vary, these filters are designed to reduce dust buildup and support cleaner air as air passes through the system.

For best results, replace every 90 days and consider setting reminders with the Filtrete app. The brand has a long-standing history of residential filtration, developed by engineers to help capture airborne allergens and improve the overall performance of home HVAC equipment.

Installation and maintenance tips

These filters are designed for standard 10x20x1 slots in furnaces, air conditioners, or HVAC systems. Handle with care during replacement, ensure the filter sits evenly in the slot, and avoid forcing it in a way that could bend the media. Regular replacement helps maintain airflow and system efficiency.