Filterbuy 20x25x4 MERV 11 Allergen Defence 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 you 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, enabling you to live and breathe freely.

Our products are unique because we 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 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 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, offering standard protection by trapping 90% of airborne particles. MERV 11 filters provide superior protection, capturing 95% of particles, making them ideal for homes or businesses with pets, smokers, or allergy sufferers. MERV 13 filters offer optimal protection, capturing 98% of particles, and are perfect for larger homes or businesses and those who want the best possible filtration.

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

Our filters are universally compatible and will work with any furnace, air conditioner, heat pump, or HVAC system, as long as you choose the proper size. We generally recommend replacing your filter every 90 days to keep your system running efficiently and maintain clean air.

At Filterbuy, we are committed to championing indoor air quality. We believe everyone deserves to breathe clean air, which is why we offer a variety of expert services and hundreds of custom air filter sizes to meet your specific filtration needs. Our new, green frames symbolize the peace of mind that comes from knowing your home or business is being properly cared for.

We are proudly 100% American-made, with a robust, homegrown network that enables us to swiftly fulfill diverse, custom orders directly to households and businesses across the country. We also offer a subscription service to simplify the process of regularly changing your air filters.

Our company has evolved since its inception in 1958, and as we continue to expand, we remain committed to our values of community investment and personal aid at every possible opportunity.

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