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Lennox furnace filters and air filters are needed to keep a good efficiency of your cooling and heating system.

Lennox Air and Furnace Filters full product list:


FiltersFast FF20255X6673M11 Replacement for Lennox X6673 MERV11, 20x25x5 - 2-Pack

In Stock!
Ships in 1 to 2 business days.

Retail: $59.99

Our Price: $49.95

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FiltersFast FF16255X6670M11 Replacement for Lennox X6670 MERV11, 16x25x5 - 2-Pack

In Stock!
Ships in 1 to 2 business days.

Retail: $69.99

Our Price: $45.95

Save 34%!

Lennox Y6604 Healthy Climate PureAir PCO3-20-16 MERV 16 20x26x5
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within the continental U.S.


In Stock!
Ships in 2 to 3 business days.

Retail: $129.99

Our Price: $119.95

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FiltersFast FF16255X6670M13 Replacement for Lennox X6670 MERV13, 16x25x5 - 2-Pack

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Ships in 1 to 2 business days.

Retail: $89.99

Our Price: $55.95

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FiltersFast FF20255X6673M13 Replacement for Lennox X6673 MERV13, 20x25x5 - 2-Pack

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Ships in 1 to 2 business days.

Retail: $89.99

Our Price: $64.95

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FiltersFast FF20255X6673M8 Replacement for Lennox X6673 MERV8, 20x25x5 - 2-Pack

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Ships in 1 to 2 business days.

Retail: $48.99

Our Price: $42.95

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Lennox X8791 Healthy Climate PureAir Insert - PCO20-28
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within the continental U.S.


In Stock!
Ships in 3 to 4 business days.

Retail: $152.99

As Low As: $109.95

Save 28%!

Lennox LB-71455 Media Filter, 24in x 20ft Roll - 30023

In Stock!
Ships in 3 to 4 business days.

Retail: $99.99

Our Price: $74.95

Save 25%!

FiltersFast FF16255X6670M8 Replacement for Lennox X6670 MERV8, 16x25x5 - 2-Pack

In Stock!
Ships in 1 to 2 business days.

Retail: $49.99

Our Price: $44.95

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Lennox X8927 Healthy Climate PureAir 4 Lamp Clips for PCO-20-28

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Ships in 1 to 2 business days.

Retail: $29.99

Our Price: $24.95

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Lennox Genuine 92X10 HEPA Filter Replacement for HEPA-40, HEPA-60
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within the continental U.S.


In Stock!
Ships in 14 to 15 business days.

Retail: $284.99

Our Price: $249.95

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Lennox X8792 Metal Mesh Insert for Healthy Climate PCO16-28
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within the continental U.S.


In Stock!
Ships in 3 to 4 business days.

Retail: $159.99

Our Price: $99.95

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Lennox 75X66 Genuine Metal Mesh Insert Fits PureAir Model PCO-2OC
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within the continental U.S.


In Stock!
Ships in 2 to 3 business days.

Retail: $199.99

As Low As: $89.95

Save 55%!

Lennox 75X73 Metal Mesh Filter Catalyst Insert Assembly
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within the continental U.S.


In Stock!
Ships in 2 to 3 business days.

Retail: $189.99

Our Price: $79.95

Save 58%!

Lennox 72H02 Whole House System Air Filter

In Stock!
Ships in 10 to 11 business days.

Retail: $29.99

Our Price: $26.95

Save 10%!

Lennox LB-71457 Media Filter 28-in x 20-ft - 30340

In Stock!
Ships in 4 to 5 business days.

Retail: $89.99

Our Price: $69.95

Save 22%!

Lennox X8793 Healthy Climate PureAir Insert - PCO14-23
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within the continental U.S.


In Stock!
Ships in 2 to 3 business days.

Retail: $199.99

Our Price: $89.95

Save 55%!

Lennox 92X09 Healthy Climate 93014-21 HEPA 40-60 Carbon Filter

In Stock!
Ships in 14 to 15 business days.

Retail: $59.99

Our Price: $53.95

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Lennox 92X08 HEPA 40/60 Foam PreFilter Genuine Lennox Part
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within the continental U.S.


In Stock!
Ships in 14 to 15 business days.

Retail: $89.99

Our Price: $79.95

Save 11%!

Lennox 6-3636L 38" AC Condensate Drain Pan

In Stock!
Ships in 4 to 5 business days.

Retail: $199.99

Our Price: $184.99

Save 8%!

Lennox 98N42 MERV 8 Pleated Furnace Filters 4-Pack

In Stock!
Ships in 1 to 2 business days.

Retail: $49.99

Our Price: $38.95

Save 22%!

Lennox 69H85 Whole House Air Purifier Filter
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within the continental U.S.


In Stock!
Ships in 1 to 2 business days.

Retail: $24.99

Our Price: $19.99

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Lennox 91X25 MERV 8 Pleated Air Filters 4-Pack

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Ships in 4 to 5 business days.

Retail: $64.99

Our Price: $51.96

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Lennox 98N44 MERV 8 Pleated Furnace Filter 4-Pack

In Stock!
Ships in 3 to 4 business days.

Retail: $59.99

Our Price: $49.99

Save 17%!

Lennox 92X17 HEPA Filter Cartridge Replacement
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within the continental U.S.


In Stock!
Ships in 8 to 9 business days.

Retail: $198.99

Our Price: $174.95

Save 12%!

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