Replacement Lennox Air Filters by Aerostar

Do you love your Lennox air filters? We have good news for you – at Factory Direct Filters, they're 10% off retail prices! That means you can receive the exact same quality filters at a much lower price. Our Lennox replacement filters are made by Aerostar right here in the USA and sold factory-direct! Opt into our subscription service, and you can receive your Lennox furnace filters at a regular frequency, reminding you to replace your dirty filter to keep the air you breathe clean.

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What Type of Lennox Filters Do You Need?

Do you know how to measure your Lennox air conditioner filter? It is important to note the difference between nominal and actual size. Once you have the length, width, and depth, you can choose from several standard and hard-to-find Lennox air filters. Then, customize with your preferred MERV rating. We suggest MERV 11 for those with kids and pets and MERV 13 for those with asthma or allergies. The perfect fit for either your AC unit or furnace, these Lennox replacement filters are highly efficient and will help improve the quality of air in your home or business.