Filterbuy 21x23x1 MERV 11 Allergen Defense Air Filters (2-Pack)

Filtration Excellence: Tailored Solutions for Clean Indoor Air

The Minimum Efficiency Reporting Value (MERV) is a rating system that evaluates the ability of air filters to capture particles, ranging from 1 to 20, with 20 capturing the smallest microns. At Filterbuy, we offer a variety of MERV-rated filters to cater to diverse air quality needs.

Standard Protection (90% Airborne Particles): MERV 8 Air Filters Ideal for homes and businesses seeking reliable indoor air quality at a reasonable cost, our MERV 8 filters effectively trap dust, pollen, and lint.

Superior Protection (95% Airborne Particles): MERV 11 Air Filters Designed for environments with pets, smokers, or allergy sufferers, our MERV 11 filters excel at capturing smaller particles, including smog and smoke.

Optimal Protection (98% Airborne Particles): MERV 13 Air Filters For larger spaces or those demanding the best filtration, our MERV 13 filters are unparalleled, removing even bacteria from the air.

Odor Eliminator (90% Airborne Particles): MERV 8 Air Filters with Activated Carbon Combining the standard MERV 8 efficiency with the added benefit of activated carbon, these filters inhibit unpleasant odors while maintaining reliable air quality.

Navigating Filter Sizes: Nominal vs. Actual Each of our filters displays both the nominal size, a rounded measurement, and the actual size, the filter's precise dimensions. Measuring your existing filter can help you find the perfect replacement.

Breathe Easier: The Importance of Air Filter Maintenance Regularly replacing your air filter is crucial for maintaining a healthy lifestyle and protecting your HVAC system. We recommend changing filters every 90 days, though frequency may vary based on your specific needs.

Filterbuy: Championing Clean Air for All At Filterbuy, we are passionate about providing everyone access to clean, allergen-free air. As a proudly American-made company, we manufacture our high-quality filters in facilities across the country, ensuring prompt delivery and a constant supply.

Our Commitment to Sustainability Recently, we've transitioned to using eco-friendly, green-framed filters, symbolizing our dedication to environmental responsibility and the well-being of our communities.

Simplify with Subscription Services To make filter changes effortless, we offer a subscription program that delivers replacement filters directly to your doorstep on your schedule, complete with exclusive discounts.

From Our Roots to Your Home Filterbuy's journey began in 1958, and we've grown to serve millions of customers nationwide. As we expand, we remain true to our values of community investment and personal aid, ensuring clean air for all.

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