Best Furnace Air Filters

Our top 2 picks

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  Filtrete 16x25x4 AC Furnace Air Filter, MPR 1000, MERV 11, Fits Lennox & Honeywell Devices, Allergen Defense, Electrostatic Air Cleaning Filter, 4-Pack (actual size 15.88 x 24.56 x 4.31)

  The Filtrete 16x25x4 Air Filter, with an MPR 1000 and MERV 11 rating, is designed to capture microparticles such as pollen, pet dander, and smoke, making it ideal for homes with allergy sufferers or pets. This filter is compatible with Honeywell furnaces requiring a 4-inch filter and offers a 12-month lifespan, ensuring long-term performance and value. Users have praised its effectiveness in trapping dust and allergens, which are visibly collected on the filter, highlighting its superior performance compared to fiberglass options. Despite occasional shipping issues, such as caved-in corners, the filter maintains its functionality and is a top choice for enhancing indoor air quality. With its electrostatically charged media, this filter is a reliable option for those seeking to improve their home's air quality efficiently and economically.
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  Filtrete 20x25x5 AC Furnace Air Filter, MPR 1000, MERV 11, Fits Lennox Devices, Allergen Defense, Electrostatic Air Cleaning Filter, 2-Pack (actual size 19.63 x 24.75 x 4.31 in)

  The Filtrete 20x25x5 Air Filter is a top choice for enhancing your home's air quality. With a MERV 11 rating and MPR 1000, it effectively captures microparticles such as pollen, pet dander, and smoke, making it ideal for households with allergies or pets. Designed for residential use, it fits perfectly in Lennox furnaces and can replace older Honeywell Electric furnace filters, ensuring a seamless integration into existing systems. Customers frequently praise its precise fit and noticeable improvement in air quality, reporting less dust and cleaner air. This filter's efficiency not only improves indoor air quality but also helps maintain optimal HVAC performance by preventing airflow restriction. With its electrostatically charged filter media, it offers a reliable and cost-effective solution to maintaining a healthy home environment. The Filtrete filter is a smart choice for those seeking an effective, easy-to-install air filtration option that delivers tangible benefits in both comfort and system efficiency.