At Filterbuy, we pride ourselves on being a one-stop shop for all your air conditioner, furnace, or HVAC system filter replacements. We offer hundreds of custom sizes in a variety of filtration ratings to ensure you can find the perfect fit, regardless of your specific needs. This helps us achieve our goal of providing you, your family, and your community access to clean indoor air that enables you to live and breathe freely.

Our products are uniquely designed to offer premium features that provide an enhanced filtration experience. They feature a pleated, electrostatic design that captures more particles, and a reinforced beverage board frame capable of withstanding extreme temperatures.

We solve the problem of allowing customers to easily purchase the exact filter size they need from the comfort of their homes. Plus, our robust supply chain ensures we can deliver these custom sizes quickly at no extra cost. We love being able to provide a service that helps keep our community healthy.

The 20x21.5x1 replacement air filters are designed for your furnace, air conditioner, heat pump, or HVAC system (actual size: 19.88" x 21.50" x 0.75"). These MERV 13 synthetic media filters (comparable with MPR 1500 - 1900 & FPR 10) protect homes from bacteria and more by trapping 98% of airborne particles without impacting air flow.

The electrostatically charged, pleated filters capture more harmful particles, last 3x longer than fiberglass models, and are 100% manufactured within the United States. The industrial-grade beverage board (recyclable) frames with dual wire backings improve structural integrity and outperform standard cardboard designs.

Please note that if you receive items with a different label, frame, or media than what is pictured, any such alteration is purely cosmetic, and your filter will still function exactly as described.

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