Filterbuy 20x25x4 MERV 13 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 can find the perfect fit, regardless of your specific needs. This allows us to provide you, your family, and your community with access to clean indoor air, enabling you to live and breathe freely.

Our products offer premium features that enhance the filtration experience. We use 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 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 that wants great indoor air quality at a reasonable rate. MERV 11 filters are ideal for homes or businesses accounting for factors like pets, smokers, and allergy sufferers. MERV 13 filters are perfect for larger homes or businesses and those who want the best possible filtration experience.

We also 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.

When it comes to choosing the correct filter size, it's important to understand the difference between nominal and actual size. The nominal size is a rounded number, while the actual size depicts the filter's precise dimensions. To measure your air filter, 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, as breathing dirty air can lead to the development of asthma, allergies, and other respiratory ailments. We generally recommend replacing your filter every 90 days, but this can vary based on factors like the number of pets, allergy sufferers, and children in your home.

Most of 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. The number of air filters you need will depend on the specific needs of your home or business, and our selection includes package quantities ranging from 1 to 12 filters.

Changing your air filter is a straightforward process. After finding the right size, turn off the power supply, remove the cover from your intake vent, take out the old filter, and insert the new one in the direction of air flow. Then, replace the cover and turn the power back on.

At Filterbuy, we are committed to championing indoor air quality and ensuring that everyone, everywhere, has access to clean air. We offer a variety of expert services and hundreds of custom air filter sizes to provide a perfect fit for your 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 proud to be 100% American made, with a robust, homegrown network that allows us to swiftly fulfill diverse, custom orders.

To simplify the process of changing your air filters, we offer a subscription service that delivers your replacements on time, with a discount. As our company has grown over nearly 70 years, we have remained true to our values by maintaining a strong commitment to community investment and personal aid.

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