Filterbuy 21x23x1 MERV 8 Dust Defense Air Filters (2-Pack)

MERV Ratings and Air Filter Performance

The Minimum Efficiency Reporting Value (MERV) rating is a scale from 1 to 20 that measures an air filter's ability to capture particles of varying sizes. Higher MERV ratings indicate better filtration 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 capture 90% of airborne particles between 3-10 microns, including dust, pollen, and lint.

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

Optimal Protection (98% Airborne Particles): MERV 13 Air Filters Perfect for larger homes or businesses, and those who want the best possible filtration, MERV 13 filters capture 98% of particles between 0.3-1 microns, including bacteria.

Odor Eliminator (90% Airborne Particles): MERV 8 Air Filters with Activated Carbon These filters provide reliable MERV 8 quality while also inhibiting unpleasant smells, making them ideal for homes or businesses that want to improve indoor air quality and odor control.

Choosing the Right Filter Size The nominal size is a rounded measurement, while the actual size is the filter's precise dimensions. Measure your current filter to find the actual size, then round up to the nearest inch to determine the nominal size.

Why Change Your Air Filter? Replacing air filters regularly maintains a healthy lifestyle by preventing the risks of asthma, allergies, and other respiratory issues. Dirty filters can also lead to system defects and higher energy costs.

How Often Should You Change Your Filter? We generally recommend replacing your filter every 3 months, but the frequency may vary based on factors like pet ownership, allergies, and the number of occupants in your home.

Will These Filters Fit My System? Most of our filters are universally compatible with furnaces, air conditioners, heat pumps, and HVAC systems. Just make sure to choose the proper size that matches your unit.

How Many Filters Do You Need? The number of filters required depends on the number of vents in your home. Our selection includes packages ranging from 1 to 12 filters to accommodate various needs.

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

About Filterbuy Filterbuy is committed to providing everyone with access to clean indoor air. We manufacture high-quality, custom-sized filters in the USA and offer subscription services to simplify the replacement process.

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