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OEM Lennox Furnace Filters, AC Filters & More

If you have a Lennox filtration system and are searching for high-quality furnace filters, AC filters or cleaner filters at low costs, browse our selection today. In addition to filters designed for Lennox, you’ll also find a variety of products intended to accommodate other major filter brands, including Honeywell, Air Bear and Aprilaire.

Depending on the age and quality of your home system, these high-quality furnace filters, air filters and cleaner filters will provide you with proper filtration for six months or more. Lennox air filters are designed to trap small particles known to cause irritation and reduce air quality, and come in a variety of styles and sizes.

Our heating and AC air filters come to you at low costs and with automatic fast shipping. We offer free shipping on select items. Improve the quality of your home’s air and keep your heater, AC or cleaner performing with optimal efficiency for years to come. If you're not sure which filter is right for you, contact us today.

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Lennox x0582 MERV 11 Filter Lennox x0581 MERV 11 Filter Lennox x0583 MERV 11 Filter
Lennox Healthy Climate
x0582 Box Filter

Nominal Size: 16" x 20" x 5"
Exact Size: 16" x 19.75" x 4.375"
Filter Rating: MERV 11
Expected Duration: 6 to 12 months
Replacement For: Honeywell FC100A1003 & FC200E1003

Lennox Healthy Climate
x0581 Box Filter

Nominal Size: 16" x 25" x 3"
Exact Size: 15.875" x 24.25" x 3"
Filter Rating: MERV 11
Expected Duration: 6 to 12 months
Replacement For: Trion 255649-101
Lennox Healthy Climate
x0583 Box Filter

Nominal Size: 16" x 25" x 5"
Exact Size: 16" x 24.75" x 4.375"
Filter Rating: MERV 11
Expected Duration: 6 to 12 months
Replacement For: Honeywell FC100A-1029 & FC200E-1029
Lennox x6670 2-Pack Special Lennox x6670 5-Pack Special Lennox x6670 MERV 11 Filter
Lennox 16x25x5 x6670 Box Filter
Our Price: $27.00

(10)
Lennox Healthy Climate
x6670 2-Pack Special

Nominal Size: 16" x 25" x 5"
Exact Size: 15.75" x 24.75" x 4.375"
Filter Rating: MERV 11
Expected Duration: 6 to 12 months
Quantity in Case: 2

Lennox Healthy Climate
x6670 5-Pack Special

Nominal Size: 16" x 25" x 5"
Exact Size: 15.75" x 24.75" x 4.375"
Filter Rating: MERV 11
Expected Duration: 6 to 12 months
Quantity in Case: 5

Lennox Healthy Climate
x6670 Box Filter

Nominal Size: 16" x 25" x 5"
Exact Size: 15.75" x 24.75" x 4.375"
Filter Rating: MERV 11
Expected Duration: 6 to 12 months

Lennox x6672 2-Pack Special Lennox x6672 5-Pack Special Lennox x6672 MERV 16 Filter
Lennox Healthy Climate
x6672 2-Pack Special

Nominal Size: 16" x 25" x 5"
Exact Size: 15.75" x 24.75" x 4.375"
Filter Rating: MERV 16
Expected Duration: 6 to 12 months
Allergen Grade: Premium
Quantity in Case: 2


Lennox Healthy Climate
x6672 5-Pack Special

Nominal Size: 16" x 25" x 5"
Exact Size: 15.75" x 24.75" x 4.375"
Filter Rating: MERV 16
Expected Duration: 6 to 12 months
Allergen Grade: Premium
Quantity in Case: 5

Lennox Healthy Climate
x6672 Box Filter w/ Carbon

Nominal Size: 16" x 25" x 5"
Exact Size: 15.75" x 24.75" x 4.375"
Filter Rating: MERV 16
Expected Duration: 6 to 12 months
Allergen Grade: Premium

Lennox x0584 MERV 11 Filter Lennox 17"x26"x4" x6664 MERV 11 Box Filter Lennox 17"x26"x4" x6666 MERV 16 Box Filter
Lennox Healthy Climate
x0584 Box Filter

Nominal Size: 16" x 26" x 5"
Exact Size: 16.375" x 26" x 5.156"
Filter Rating: MERV 11
Expected Duration: 6 to 12 months

Lennox Healthy Climate
x6664 Box Filter

Nominal Size: 17" x 26" x 4"
Exact Size: 16.625" x 26.75" x 4"
Filter Rating: MERV 11
Expected Duration: 6 to 12 months

Lennox Healthy Climate
x6666 Box Filter

Nominal Size: 17" x 26" x 4"
Exact Size: 16.625" x 26.75" x 4"
Filter Rating: MERV 16
Expected Duration: 6 to 12 months

Lennox x0585 2-Pack Special Lennox x0585 MERV 11 Filter Lennox x7935 2-Pack Special
Lennox Healthy Climate
x0585 2-Pack Special

Nominal Size: 20" x 20" x 5"
Exact Size: 20" x 19.75" x 4.375"
Filter Rating: MERV 11
Expected Duration: 6 to 12 months
Replacement For: Honeywell FC100A1011 & FC200E1011
Quantity in Case: 2


Lennox Healthy Climate
x0585 Box Filter

Nominal Size: 20" x 20" x 5"
Exact Size: 20" x 19.75" x 4.375"
Filter Rating: MERV 11
Expected Duration: 6 to 12 months
Replacement For: Honeywell FC100A1011 & FC200E1011

Lennox Healthy Climate
x7935 2-Pack Special

Nominal Size: 20" x 20" x 5"
Exact Size: 20" x 19.75" x 4.375"
Filter Rating: MERV 16
Expected Duration: 6 to 12 months
Allergen Grade: Premium
Quantity in Case: 2


Lennox x7935 5-Pack Special Lennox x7935 MERV 16 Filter Lennox x0586 MERV 11 Filter
Lennox 20x25x5 x0586 Box Filter
Our Price: $29.00

(2)
Lennox Healthy Climate
x7935 5-Pack Special

Nominal Size: 20" x 20" x 5"
Exact Size: 20" x 19.75" x 4.375"
Filter Rating: MERV 16
Expected Duration: 6 to 12 months
Allergen Grade: Premium
Quantity in Case: 5

Lennox Healthy Climate
x7935 Box Filter w/ Carbon

Nominal Size: 20" x 20" x 5"
Exact Size: 20" x 19.75" x 4.375"
Filter Rating: MERV 16
Expected Duration: 6 to 12 months
Allergen Grade: Premium

Lennox Healthy Climate
x0586 Box Filter

Nominal Size: 20" x 25" x 5"
Exact Size: 20" x 24.75" x 4.375"
Filter Rating: MERV 11
Expected Duration: 6 to 12 months
Replacement For: FC100A-1037 & FC200E-1037

Lennox 20"x25"x5" x1152 MERV 11 Box Filter Lennox x6673 2-Pack Special Lennox x6673 5-Pack Special
Lennox 20x25x5 x1152 Box Filter
Our Price: $25.00

(2)
Lennox Healthy Climate
x1152 Air Bear Filter

Nominal Size: 20" x 25" x 5"
Exact Size: 19.75" x 24.25" x 5"
Filter Rating: MERV 11
Expected Duration: 6 to 12 months
Replacement For: 255649-102 & 229990-102

Lennox Healthy Climate
x6673 2-Pack Special

Nominal Size: 20" x 25" x 5"
Exact Size: 19.75" x 24.75" x 4.375"
Filter Rating: MERV 11
Expected Duration: 6 to 12 months
Quantity in Case: 2


Lennox Healthy Climate
x6673 5-Pack Special

Nominal Size: 20" x 25" x 5"
Exact Size: 19.75" x 24.75" x 4.375"
Filter Rating: MERV 11
Expected Duration: 6 to 12 months
Quantity in Case: 5

Lennox x6673 MERV 11 Filter Lennox x6675 2-Pack Special Lennox x6675 5-Pack Special
Lennox 20x25x5 x6673 Box Filter
Our Price: $29.00

(8)

Lennox Healthy Climate
x6673 Box Filter

Nominal Size: 20" x 25" x 5"
Exact Size: 19.75" x 24.75" x 4.375"
Filter Rating: MERV 11
Expected Duration: 6 to 12 months

Lennox Healthy Climate
x6675 Box 2-Pack Special

Nominal Size: 20" x 25" x 5"
Exact Size: 19.75" x 24.75" x 4.375"
Filter Rating: MERV 16
Expected Duration: 6 to 12 months
Allergen Grade: Premium
Quantity in Case: 2


Lennox Healthy Climate
x6675 Box 5-Pack Special

Nominal Size: 20" x 25" x 5"
Exact Size: 19.75" x 24.75" x 4.375"
Filter Rating: MERV 16
Expected Duration: 6 to 12 months
Allergen Grade: Premium
Quantity in Case: 5

Lennox x6675 MERV 16 Filter Lennox x0587 MERV 11 Filter Lennox 21"x26"x4" x6667 MERV 11 Box Filter
Lennox 20x26x5 x0587 Box Filter
Our Price: $29.00

(1)
Lennox 21x26x4 x6667 Box Filter
Our Price: $30.00

(1)
Lennox Healthy Climate
x6675 Box Filter w/ Carbon

Nominal Size: 20" x 25" x 5"
Exact Size: 19.75" x 24.75" x 4.375"
Filter Rating: MERV 16
Expected Duration: 6 to 12 months
Allergen Grade: Premium

Lennox Healthy Climate
x0587 Box Filter

Nominal Size: 20" x 26" x 5"
Exact Size: 20.438" x 26" x 5.156"
Filter Rating: MERV 11
Expected Duration: 6 to 12 months

Lennox Healthy Climate
x6667 Box Filter

Nominal Size: 21" x 26" x 4"
Exact Size: 21.25" x 26" x 4"
Filter Rating: MERV 11
Expected Duration: 6 to 12 months

Lennox 21"x26"x4" x6669 MERV 16 Box Filter Lennox 30023 Hammock Filter Lennox 30025 Hammock Filter
Lennox Healthy Climate
x6669 Box Filter

Nominal Size: 21" x 26" x 4"
Exact Size: 21.25" x 26" x 4"
Filter Rating: MERV 16
Expected Duration: 6 to 12 months

Lennox Healthy Climate
30023 Hammock Roll Filter

Nominal Size: 24in x 20ft
Expected Duration: 2 months

Lennox Healthy Climate
30025 Hammock Roll Filter

Nominal Size: 36in x 20ft
Expected Duration: 2 months