(855) 345-8289//Email US
filterbuy

Shop by

air-filters
>

Lennox Compatible Air Filter Replacements

Filterbuy replacement air filters offer the same high quality materials and performance as the name brand but at a fraction of the cost.

CUSTOMER REVIEW

5star

Absolutely the best and most efficient way to purchase furnace filters! No problem finding the filter I needed, filters delivered within a couple of days, fit perfectly and shipping is FREE! What's not to like?

Christine P.

filter 16x25x3 - MERV 11
16x25x3 - MERV 11
Actual: 15 3/4 x 24 1/4 x 3"
Designed to Fit:
X0581 X5427

MERV 11 - filters pollen, dust mites, mold, auto emissions, and large particles like milled flour

$29.49 ea

as low as $ 26.49 when you buy 2 or more

filter 16x20x5 - MERV 11
16x20x5 - MERV 11
Actual: 16 x 20 x 4 1/4"
Designed to Fit:
X0582

MERV 11 - filters pollen, dust mites, mold, auto emissions, and large particles like milled flour

$70.99 ea

as low as $ 44.36 when you buy 2 or more

filter 16x25x5 - MERV 11
16x25x5 - MERV 11
Actual: 15.75 x 24.75 x 4.38"
Designed to Fit:
X0583 X6670 HCF16-10

MERV 11 - filters pollen, dust mites, mold, auto emissions, and large particles like milled flour

$55.94 ea

as low as $ 33.98 when you buy 2 or more

filter 17x26x4 - MERV 11
17x26x4 - MERV 11
Actual: 16 1/2 x 26 x 4 1/8"
Designed to Fit:
75x74 x6664 x6666

MERV 11 - filters pollen, dust mites, mold, auto emissions, and large particles like milled flour

$67.28 ea

as low as $ 42.05 when you buy 2 or more

filter 16x28x6 - MERV 11
16x28x6 - MERV 11
Actual: 15.28 x 26 15/16 x 6"
Designed to Fit:
X1444 X4559 X5425

MERV 11 - filters pollen, dust mites, mold, auto emissions, and large particles like milled flour

$59.77 ea

as low as $ 43.24 when you buy 2 or more

filter 20x20x5 - MERV 11
20x20x5 - MERV 11
Actual: 19 3/4 x 19 7/8 x 4 3/8"
Designed to Fit:
X0585 X8305 X8308

MERV 11 - filters pollen, dust mites, mold, auto emissions, and large particles like milled flour

$33.49 ea

as low as $ 30.49 when you buy 2 or more

filter 20x21x5 - MERV 11
20x21x5 - MERV 11
Actual: 20 x 20 6/3 x 4 3/8"
Designed to Fit:
X8790

MERV 11 - filters pollen, dust mites, mold, auto emissions, and large particles like milled flour

$68.90 ea

as low as $ 43.08 when you buy 2 or more

filter 20x25x5 - MERV 11
20x25x5 - MERV 11
Actual: 19.88 x 24.75 x 4.38"
Designed to Fit:
X0586 X6673 X5426

MERV 11 - filters pollen, dust mites, mold, auto emissions, and large particles like milled flour

$46.77 ea

as low as $ 30.22 when you buy 2 or more

filter 20x25x6 - MERV 11
20x25x6 - MERV 11
Actual: 19 3/4 x 24 1/2 x 6 3/8"
Designed to Fit:
X0445 X4560 X5424

MERV 11 - filters pollen, dust mites, mold, auto emissions, and large particles like milled flour

$66.95 ea

as low as $ 41.04 when you buy 2 or more

filter 20x26x3 - MERV 11
20x26x3 - MERV 11
Actual: 20 1/8 x 26 x 3"
Designed to Fit:
x1184

MERV 11 - filters pollen, dust mites, mold, auto emissions, and large particles like milled flour

$32.49 ea

as low as $ 29.49 when you buy 2 or more

filter 20x26x5 - MERV 11
20x26x5 - MERV 11
Actual: 20x25.88x4.88"
Designed to Fit:
X0587 X5428

MERV 11 - filters pollen, dust mites, mold, auto emissions, and large particles like milled flour

$33.49 ea

as low as $ 30.49 when you buy 2 or more