Filterbuy 19x21x1 MERV 8 Pleated HVAC Air Filters (4-Pack)

Filtration Ratings and Capabilities

The Minimum Efficiency Reporting Value (MERV) scale rates the ability of air filters to trap particles, ranging from 1 to 20 (with 20 capturing the smallest microns).

Standard Protection (90% Airborne Particles): MERV 8 Air Filters These filters are suitable for most homes or businesses seeking reliable indoor air quality at a reasonable cost.

Superior Protection (95% Airborne Particles): MERV 11 Air Filters Ideal for environments with pets, smokers, or allergy concerns, offering enhanced filtration.

Optimal Protection (98% Airborne Particles): MERV 13 Air Filters Recommended for larger spaces or those desiring the highest level of air purification.

Odor Eliminator (90% Airborne Particles): MERV 8 Filters with Activated Carbon Provides MERV 8 quality filtration while also helping to neutralize unpleasant odors.

Choosing the Right Filter

Nominal Size vs. Actual Size: The nominal size is a rounded measurement, while the actual size reflects the filter's precise dimensions.

Measuring Your Filter: If no size is listed, measure the width, length, and depth, then round up to the nearest inch to find the corresponding nominal size.

Why Change Filters: Maintaining clean air can prevent health issues and system malfunctions leading to higher energy bills and repair costs.

When to Change Filters: Generally every 3 months, but frequency may vary based on factors like home occupancy and environment.

Compatibility: Most of our filters work universally, but confirm the brand matches your HVAC system if specified.

Quantity Needed: Depends on your home's number of vents, with package sizes ranging from 1 to 12 filters.

Changing Filters: Turn off power, remove old filter, insert new one in the direction of airflow, replace cover, and restore power.

About Filterbuy

Championing Indoor Air Quality: We believe everyone deserves access to clean, healthy air to live and breathe freely.

Finding the Perfect Fit: With hundreds of custom sizes, we ensure the right solution for any HVAC system.

Green Means Clean: Our new eco-friendly frames symbolize the peace of mind of purified air.

100% American Made: We manufacture filters nationwide to promptly fulfill diverse orders.

Subscribe and Save: Simplify replacements with discounted filter delivery on your schedule.

Our History: As a family-owned business since 1958, we remain committed to community support.

In summary, Filterbuy offers a wide range of premium air filters tailored to your specific needs, helping create a healthier indoor environment through efficient, American-made products and services.

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