Filterbuy 20x20x1 MERV 11 Allergen Defense 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 various filtration ratings to ensure you find the perfect fit for 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.

What sets our products apart is the premium features we offer. Our filters have a pleated, electrostatic design that captures more particles, and a reinforced beverage board frame capable of withstanding extreme temperatures. This enhanced filtration experience sets us apart.

We solve the problem of customers having to search for the exact filter size they need by allowing them to simply purchase it 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. By offering a range of MERV-rated filters, from MERV 8 to MERV 13, we cater to different needs, whether it's standard, superior, or optimal protection, or even odor elimination.

Our MERV 8 filters are perfect for most homes or businesses, offering great indoor air quality at a reasonable rate. MERV 11 filters are ideal for homes or businesses with factors like pets, smokers, or allergy sufferers. For larger spaces or those who want the best filtration, our MERV 13 filters provide optimal protection.

We also offer MERV 8 filters with activated carbon, perfect for inhibiting unpleasant smells while maintaining reliable MERV 8 quality.

We understand the importance of choosing the right filter size, so we provide guidance on nominal versus actual sizes, as well as how to measure and replace your filters. Changing your air filters regularly is crucial for maintaining a healthy lifestyle, as dirty air can lead to respiratory issues.

At Filterbuy, we're committed to championing indoor air quality and ensuring everyone has access to clean, allergen-free air. Our green-framed filters, made in the USA, symbolize the peace of mind that comes with knowing your home or business is being properly cared for.

To make the filter-changing process even easier, we offer a subscription service that delivers replacement filters right to your door on your schedule, with a discount on every delivery.

Our company's evolution from a small, family-owned business in 1958 to the filtration leader we are today has been driven by our commitment to community investment and personal aid. As we expand our reach, we remain true to our values, dedicated to providing better air for all.

product information: