Collection: Furnace & Air Conditioner Filters
Discover our extensive selection of furnace and air conditioning filters, also known as air filters or HVAC filters. We offer AC filters for top brands, including Carrier, Honeywell, Lennox, Aprilaire, AirBear, and Trane.
Our inventory features:
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Over 50 standard sizes in 1-inch, 2-inch, and 4-inch thicknesses
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MERV ratings of 8, 11, and 13 for various filtration needs
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Both standard and hard-to-find air filter sizes
Find the perfect filter for your home or business at competitive prices. Whether you need a standard replacement or a specialized size, we've got you covered.
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Lennox X8348 MERV 10 Maintenance Kit for Air Cleaner Model PCO-20C
Vendor:Regular price $ 339.99 USDRegular priceUnit price / per$ 429.00 USDSale price $ 339.99 USDSale -
Lennox X8345 MERV 16 Maintenance Kit for Air Cleaner Model PCO-20C 21x26x4
Vendor:Regular price $ 399.11 USDRegular priceUnit price / per$ 499.99 USDSale price $ 399.11 USDSale -
Carrier PGAPXCAR1620 Air Purifier Replacement Cartridge Nominal size: 16x20x3 - Actual size 17.3x21.9x2.6
Vendor:Regular price From $ 112.96 USDRegular priceUnit price / per$ 149.95 USDSale price From $ 112.96 USDSale -
Lennox X8790 MERV 16 PLEATED Furnace Filter 20x21x5 for PCO14-23
Vendor:Regular price $ 119.95 USDRegular priceUnit price / per$ 199.95 USDSale price $ 119.95 USDSale -
Lennox X8797 MERV 16 Maintenance Kit for PureAir Air Cleaner Model PCO14-23
Vendor:Regular price $ 199.99 USDRegular priceUnit price / per$ 269.95 USDSale price $ 199.99 USDSale -
Lennox X8347 MERV 16 Maintenance Kit Air Cleaner Model PCO-12C
Vendor:Regular price $ 339.99 USDRegular priceUnit price / per$ 389.81 USDSale price $ 339.99 USDSale -
Lennox X8349 MERV 10 Genuine Annual Maintenance Kit with Insert - 17x26x4
Vendor:Regular price $ 255.95 USDRegular priceUnit price / per$ 319.99 USDSale price $ 255.95 USDSale -
TopTech TechPure TT-FM-2025 QB OEM 20x25x4 Replacement Furnace Filter - QwikBox(R)
Vendor:Regular price $ 39.99 USDRegular priceUnit price / per$ 69.95 USDSale price $ 39.99 USDSale -
TopTech TechPure TT-FM-1625 OEM 16x25x4 Replacement Furnace Filter
Vendor:Regular price $ 39.99 USDRegular priceUnit price / per$ 59.95 USDSale price $ 39.99 USDSale -
TopTech TechPure TT-FM-1620 QB OEM 16x20x4 Replacement Furnace Filter for TechPure TT-MAC-1722 air cleaners- QwikBox(R)
Vendor:Regular price $ 38.99 USDRegular priceUnit price / per$ 59.95 USDSale price $ 38.99 USDSale -
TopTech TechPure TT-FM-2020QB OEM 20x20x4 Replacement Furnace Filter - QwikBox(R)
Vendor:Regular price $ 38.50 USDRegular priceUnit price / per$ 59.95 USDSale price $ 38.50 USDSale -
Lennox X7935 Compatible 20x20x5 MERV 13 Furnace Filter by Atomic - 2 pack
Vendor:Regular price $ 86.95 USDRegular priceUnit price / per$ 89.95 USDSale price $ 86.95 USDSale -
Lennox X0585 Compatible 20x20x5 MERV 13 Furnace Filter by Atomic - 2 pack
Vendor:Regular price $ 85.95 USDRegular priceUnit price / per$ 119.95 USDSale price $ 85.95 USDSale -
Lennox X7935 Compatible 20x20x5 MERV 11 Furnace Filter by Atomic - 2 pack
Vendor:Regular price $ 75.99 USDRegular priceUnit price / per$ 109.88 USDSale price $ 75.99 USDSale -
Lennox X0585 20x20x5 Furnace Filter HCF14-11 MERV 11 - 1 Pack
Vendor:Regular price $ 47.99 USDRegular priceUnit price / per$ 79.95 USDSale price $ 47.99 USDSale -
Lennox X0585 Compatible 20x20x5 MERV 11 Furnace Filter by Atomic - 2 pack
Vendor:Regular price $ 74.95 USDRegular priceUnit price / per$ 99.95 USDSale price $ 74.95 USDSale