10 Best A C Filters 2026 in the United States

The AprilAire 213 Replacement Filter is a high-quality air filter designed specifically for various AprilAire whole-house air purifiers. It features a MERV 13 rating, effectively trapping a wide range of airborne allergens including dust, pollen, mold spores, bacteria, pet dander, and dust mites—making it a solid choice for those looking to improve home air quality and reduce allergy triggers. The filter’s pleated synthetic fiber material enhances its dust-holding capacity and durability compared to standard flat filters. Sized at 20 x 25 x 4 inches (noting that the nominal size is an industry standard, so the actual dimensions can differ slightly), it fits specific AprilAire models and comes in a convenient two-pack. One standout feature is the patented AprilAire Self-Seal Technology, which reduces air leakage around the filter edges, helping ensure that most air passes through the filter media for better purification.

Installation is straightforward thanks to the unique Interlock Rail System, with no extra assembly or reinforcements required—just slide it in and close the door. Since it’s made in the USA by AprilAire, a reputable brand in indoor air quality, users can trust the filter’s quality and compatibility. This filter is specifically designed for use with AprilAire air purifiers, so it may not fit or perform well with other brands. Additionally, while the MERV 13 rating offers strong filtration, it may cause slightly higher airflow resistance compared to lower MERV filters, which could be a consideration for some HVAC systems. This filter is an excellent match for owners of compatible AprilAire systems seeking reliable, effective allergen removal and easy installation.

The Filtrete 20x20x1 AC Furnace Air Filter by 3M is designed to improve your home's air quality by capturing unwanted particles. This 6-pack of filters is meant for residential use and is compatible with your furnace, air conditioner, or HVAC system. The filter has a MERV 5 rating and an MPR of 300, meaning it can capture a decent amount of particles, although it’s on the lower end of the filtration scale. This makes it suitable for households without severe allergy concerns but looking to maintain basic air cleanliness.

The filter size is slightly smaller than the nominal size at 19.69 x 19.69 x 0.81 inches, so it’s important to ensure it fits your system correctly. The material used is polypropylene, which is durable and effective for the purpose. One of the strengths of this product is the 3-in-1 technology that helps pull in and trap particles, contributing to cleaner air. However, a drawback is that with a MERV 5 rating, it won't capture the smallest particles like some higher-rated filters.

Each filter lasts up to three months, and a subscription option is available to simplify the replacement process and save money. In conclusion, this air filter is a solid choice for anyone looking to improve basic air quality in their home without the need for advanced filtration.

The Filtrete 20x25x1 AC Furnace Air Filter comes as a 6-pack of pleated filters made from polypropylene, designed to fit common air conditioners and furnaces. It has a MERV rating of 5, which means it’s effective at trapping larger particles like dust, pollen, and pet dander, making it a solid choice for regular household air cleaning but not ideal if you need to capture smaller allergens or very fine particles. Its actual size is slightly smaller than the nominal 20x25 inches, so it’s important to check your system’s filter slot size to ensure a proper fit.

The filter uses Filtrete’s 3-in-1 electrostatic technology, helping to pull in and hold unwanted particles, which can improve air quality and contribute to a fresher home environment. A handy feature is the Filtrete Smart App, which can remind you when it’s time to change the filter, recommended every 90 days for best performance. Weighing just 1 pound each, these filters are easy to handle and replace.

While the MERV 5 rating means this product won’t handle very fine indoor pollutants or smoke, it strikes a good balance for most households focused on general air cleanliness without sacrificing airflow or requiring frequent changes. It is a well-regarded option from a trusted brand that suits everyday use in standard HVAC systems.