Filterbuy 20x25x1 MERV 13 Air Filters (4-Pack)

At Filterbuy, we take pride in 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 that 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 unique because we offer premium features that provide an enhanced filtration experience. Our filters 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. Our robust supply chain ensures that 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. We offer a variety of air filter sizes and ratings, including 20x20x1, 16x25x1, 20x25x1, and 20x25x5 Honeywell air filters.

MERV (Minimum Efficiency Reporting Value) is a measurement system that rates the ability of filters to trap particles on a scale of 1-20, with 20 capturing the smallest microns. MERV 8 air filters are perfect for almost any home or business that wants great indoor air quality at a reasonable rate, providing 90% protection. MERV 11 air filters are ideal for homes or businesses accounting for factors like pets, smokers, and allergy sufferers, offering 95% protection. MERV 13 air filters provide 98% protection, making them perfect for larger homes or businesses, and those who want the best possible filtration experience.

We also offer MERV 8 air filters with activated carbon, which are perfect for homes or businesses that want to inhibit unpleasant smells while maintaining reliable MERV 8 quality filtration.

To ensure the perfect fit, we recommend measuring your current air filter and rounding up to the nearest inch to find the corresponding nominal size. Replacing your air filter every 90 days is generally recommended to maintain a healthy lifestyle and keep your system running efficiently.

At Filterbuy, we are committed to championing indoor air quality and providing everyone with access to clean, healthy air. Our filters are 100% American-made, and we offer a subscription service to make the filter replacement process even more convenient. As a family-owned and operated company with nearly 70 years of experience, we take pride in our values of community investment and personal aid.

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