Filterbuy 18x24x1 MERV 11 Allergen Defense Air Filters (4-Pack)

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. Our goal is to provide you, your family, and your community with 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 giving customers the ability to simply 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, including 20x20x1, 16x25x1, 20x25x1, and 20x25x5 Honeywell air filters.

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. Our MERV 8 air filters are perfect for almost any home or business that wants great indoor air quality at a reasonable rate. MERV 11 air filters are ideal for homes or businesses accounting for factors like pets, smokers, and allergy sufferers, while MERV 13 air filters are 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, perfect for homes or businesses that want to inhibit unpleasant smells with reliable MERV 8 quality.

At Filterbuy, we believe that cleaner air is always better, and we work to ensure that everyone, everywhere, has access to clean indoor air, free of allergens and pollutants. We offer a variety of expert services and hundreds of custom air filter sizes that are compatible with a near-infinite number of systems, as we know that there is no one-size-fits-all solution when it comes to clean air.

Our new, green frames are constructed with the same high-quality materials that you have grown accustomed to, and we made the decision to switch to this greener design to help symbolize the peace of mind that comes from knowing your home or business is being properly cared for.

We are proud to be a 100% American-made company, with a robust, homegrown network that enables us to swiftly fulfill diverse, custom orders directly to the doors of households and businesses across the country at premium rates.

To simplify the process of regularly changing your air filters, we offer a subscription service that allows you to find the right product and choose the delivery interval, with the majority of our Amazon catalog already eligible for the program, and a discount on every delivery when you enroll.

Our small, family-owned and operated company has evolved since its inception in 1958 to the filtration business that you know and love today, with thousands of employees serving millions of customers. As our team continues to expand to new neighborhoods across the country, we make sure to stay true to our values by keeping our commitment to community investment and personal aid at every possible opportunity.

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