Filterbuy 20x25x1 Air Filters MERV 11 Allergen Defense (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 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. 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 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. From our first air filter produced in 2013, we have proudly built our business in the USA, now manufacturing in multiple states. This robust, homegrown network gives us the unique ability to swiftly fulfill diverse, custom orders directly to the doors of households and businesses across the country at premium rates.

Our air filters are available in various sizes and MERV ratings to suit different needs. MERV 8 filters provide standard protection, capturing 90% of airborne particles. MERV 11 filters offer superior protection, trapping 95% of particles, perfect for homes or businesses with pets, smokers, or allergy sufferers. MERV 13 filters provide optimal protection, capturing 98% of particles, ideal for larger spaces or those who want the best possible filtration.

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

Choosing the right air filter size is important. The nominal size is a shorthand number rounded to the nearest whole or half inch, while the actual size is the filter's precise dimensions. If your current filter does not have a dimension listed, use a tape measure to record the width, length, and depth, then round up to the nearest inch to find the corresponding nominal size.

Replacing your air filter regularly is crucial for maintaining a healthy lifestyle and keeping your HVAC system running efficiently. We generally recommend changing your filter every 90 days, but this may vary based on factors like pet ownership, allergy concerns, and the number of occupants in your home.

At Filterbuy, we are committed to providing you with the best possible air filtration experience. Our new, green frames symbolize the peace of mind that comes from knowing your home or business is being properly cared for. When you see Filterbuy green, you can exhale with the confidence that you are breathing crisp, pure, fresh air.

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