Filterbuy 20x25x4 MERV 11 Allergen Defense Air Filters (2-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 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 offer premium features that provide an enhanced filtration experience. This includes a pleated, electrostatic design that captures more particles and a reinforced beverage board frame capable of withstanding extreme temperatures.

We give customers the ability to simply purchase the exact filter size they need from the comfort of their homes. 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 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. MERV 8 filters are perfect for almost any home or business that wants great indoor air quality at a reasonable rate, providing 90% standard protection. MERV 11 filters offer 95% superior protection, making them ideal for homes or businesses with factors like pets, smokers, and allergy sufferers. MERV 13 filters provide 98% optimal protection, perfect for larger homes or businesses and those who want the best possible filtration experience.

For homes or businesses that want to inhibit unpleasant smells, we offer MERV 8 air filters with activated carbon, providing 90% odor elimination.

When it comes to choosing the correct filter size, the nominal size is a rounded number, while the actual size depicts the filter's precise dimensions. Measuring your current air filter and rounding up to the nearest inch will help you 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. Our filters are universally compatible and work with any furnace, air conditioner, heat pump, or HVAC system.

At Filterbuy, we are committed to championing indoor air quality and ensuring everyone has access to clean air. Our green-framed filters, made with high-quality materials, symbolize the peace of mind that comes from knowing your home or business is being properly cared for. As a proudly American-made company, we manufacture our filters across the country to swiftly fulfill diverse, custom orders.

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