Filterbuy 20x25x4 MERV 13 Air Filters (3-Pack)

Measurement System: The Minimum Efficiency Reporting Value (MERV) rates the ability of filters to trap particles on a scale of 1-20, with 20 capturing the smallest microns.

Standard Protection (90%): MERV 8 Air Filters are perfect for almost any home or business seeking great indoor air quality at a reasonable rate.

Superior Protection (95%): MERV 11 Air Filters are ideal for homes or businesses accounting for factors like pets, smokers, and allergy sufferers.

Optimal Protection (98%): MERV 13 Air Filters are perfect for larger homes or businesses and those who want the best possible filtration experience.

Odor Eliminator (90%): MERV 8 Air Filters with Activated Carbon are perfect for homes or businesses that want to inhibit unpleasant smells with reliable MERV 8 quality.

Nominal Size vs. Actual Size: The nominal size is a rounded number, while the actual size depicts the filter's precise dimensions. All filters have both measurements listed.

Measuring Your Air Filter: If your current filter lacks dimensions, 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?: Dirty air can lead to asthma, allergies, and other respiratory issues. Old filters can also cause system defects and higher energy costs.

When to Change Your Air Filter?: We generally recommend replacing every 90 days to maintain efficiency, but this may vary based on factors like pets, allergies, and household size.

Will These Fit My System?: Most of our filters are universally compatible, but check for any specific brand name matches to ensure proper fit.

How Many Air Filters Do I Need?: This depends on your home's needs, but our selection includes packages ranging from 1 to 12 filters to cover any situation.

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

Our Mission: At Filterbuy, we champion indoor air quality as the foundation for healthy living. We work tirelessly to ensure everyone has access to clean air, free of allergens and pollutants.

Finding the Perfect Fit: With a variety of expert services and custom sizes, we provide a quality product to protect any home or business, no matter the filtration needs.

Green Means Clean: Our new green frames symbolize the peace of mind that comes from knowing your air is being properly cared for.

100% American Made: We proudly manufacture our filters in the USA, enabling swift fulfillment of diverse orders nationwide.

Subscribe and Save: Our subscription service simplifies the filter replacement process, delivering them on time with a discount.

Our History: From our humble beginnings in 1958, we've evolved into a filtration business serving millions, staying true to our values of community investment and personal aid.

product information: