Filterbuy 19x21x1 MERV 8 Dust Defense Air Filters (2-Pack)

Product Description

Filtration Efficiency Measurement: MERV Rating The Minimum Efficiency Reporting Value (MERV) is a rating system that evaluates an air filter's ability to capture airborne particles on a scale of 1 to 20, with higher numbers indicating the capture of smaller particles.

Standard Protection (90% Airborne Particles) MERV 8 Air Filters These filters are perfect for almost any home or business that wants great indoor air quality at a reasonable rate. They trap 90% of airborne particles between 3 and 10 microns in size, including dust, pollen, and lint.

Superior Protection (95% Airborne Particles) MERV 11 Air Filters Ideal for homes or businesses accounting for factors like pets, smokers, and allergy sufferers, these filters capture 95% of airborne particles between 1 and 3 microns, including smoke and smog.

Optimal Protection (98% Airborne Particles) MERV 13 Air Filters For larger homes or businesses, and those seeking the best possible filtration, these filters trap 98% of airborne particles between 0.3 and 1 micron, including bacteria.

Odor Eliminator (90% Airborne Particles) MERV 8 Air Filters with Activated Carbon Perfect for homes or businesses that want to inhibit unpleasant smells while maintaining reliable MERV 8 filtration quality, trapping 90% of airborne particles between 3 and 10 microns.

Choosing the Correct Filter Size Nominal Size vs. Actual Size The nominal size is a rounded measurement in inches (e.g., 16 x 20 x 1), while the actual size depicts the filter's precise dimensions (e.g., 15.50 x 19.50 x 0.75). Both are provided to ensure a proper fit.

Measuring Your Air Filter If your current filter does not have dimensions listed, use a tape measure to record the width, length, and depth, then round up to the nearest inch to find the corresponding nominal size.

Why Change Your Air Filter? Maintaining clean indoor air is crucial for healthy living, as dirty filters can lead to respiratory issues and system inefficiencies that increase energy costs and repairs.

When to Change Your Air Filter? We generally recommend replacing filters every 90 days, but the frequency may vary based on factors like pet ownership, allergies, and household size.

Will These Filters Fit My System? Our filters are universally compatible with most furnaces, air conditioners, heat pumps, and HVAC systems, as long as you select the proper size. If you see a specific brand name, ensure it matches your unit model.

How Many Filters Do I Need? The number of filters required depends on your home's needs, but our selection includes packages ranging from 1 to 12 filters to accommodate any situation.

How to Change Your Air Filter? Turn off the power, remove the old filter, insert the new one in the direction of airflow, replace the cover, and turn the power back on.

About Us: Championing Indoor Air Quality At Filterbuy, we believe everyone deserves access to clean, healthy air. That's why we work tirelessly to provide custom air filters that fit a wide range of systems, ensuring you and your community can breathe freely.

Our Green Means Clean Initiative Our new green filter frames are made with the same high-quality materials, symbolizing the peace of mind that comes from knowing your home or business is properly cared for.

100% American Made From our start in 2013, we have proudly manufactured our filters in the USA, with a robust network spanning Alabama, California, Florida, and beyond, enabling swift, nationwide delivery.

Subscribe and Save Our subscription service simplifies the filter replacement process, delivering the right products at the right time while providing discounts on every order.

Nearly 70 Years of Giving Back As our family-owned business has grown, we've remained committed to community investment and personal aid, staying true to our values of service and support.

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