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Shop All Furnace Air Filters20x20x1 Air Filters20x25x1 Air Filters16x20x1 Air Filters16x25x1 Air Filters12x12x1 Air Filters12x24x1 Air Filters14x20x1 Air Filters14x24x1 Air Filters14x25x1 Air Filters18x20x1 Air Filters20x30x1 Air Filters24x24x1 Air FiltersAllergen Air FiltersFiltrete Air FiltersFilterBuy Air FIltersFlanders Air FIltersMERV Rating: 5 to 8MERV Rating: 9 to 12MERV Rating: 13 to 16
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Best seller Filtrete 20x25x4 Air Filter, MPR 1550 MERV 12, Ultra Allergen Reduction, 1 Filter $33.88
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$3388
current price $33.88Filtrete 20x25x4 Air Filter, MPR 1550 MERV 12, Ultra Allergen Reduction, 1 Filter
10164.6 out of 5 Stars. 1016 reviews
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100+ bought since yesterday Filtrete 20x20x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergen Defense, 2 Filters $21.88 $10.94/ea
100+ bought since yesterday

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$2188
current price $21.88$10.94/ea
Filtrete 20x20x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergen Defense, 2 Filters
12454.6 out of 5 Stars. 1245 reviews
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Overall pick Filtrete 16x25x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergen Defense, 2 Filters $21.88 $10.94/ea
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$2188
current price $21.88$10.94/ea
Filtrete 16x25x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergen Defense, 2 Filters
12954.6 out of 5 Stars. 1295 reviews
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Filtrete 12x24x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter $16.49 Was $27.28

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Now$1649
current price Now $16.49, Was $27.28$27.28
Filtrete 12x24x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter
5894.8 out of 5 Stars. 589 reviews
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Best seller Filtrete 20x25x4 Air Filter, MPR 1550 MERV 12, Ultra Allergen Reduction, 1 Filter $33.88
Best seller

$3388
current price $33.88Filtrete 20x25x4 Air Filter, MPR 1550 MERV 12, Ultra Allergen Reduction, 1 Filter
10164.6 out of 5 Stars. 1016 reviews
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100+ bought since yesterday Filtrete 20x20x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergen Defense, 2 Filters $21.88 $10.94/ea
100+ bought since yesterday

$2188
current price $21.88$10.94/ea
Filtrete 20x20x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergen Defense, 2 Filters
12454.6 out of 5 Stars. 1245 reviews
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Overall pick Filtrete 16x25x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergen Defense, 2 Filters $21.88 $10.94/ea
Overall pick

$2188
current price $21.88$10.94/ea
Filtrete 16x25x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergen Defense, 2 Filters
12954.6 out of 5 Stars. 1295 reviews
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Best seller Filtrete 14x20x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter $18.47
Best seller

$1847
current price $18.47Filtrete 14x20x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter
6474.7 out of 5 Stars. 647 reviews
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Best seller Filtrete 14x18x1 Air Filter, MPR 300 MERV 5, Dust Reduction, 1 Filter $5.64
Best seller

$564
current price $5.64Filtrete 14x18x1 Air Filter, MPR 300 MERV 5, Dust Reduction, 1 Filter
3704.6 out of 5 Stars. 370 reviews
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Filtrete 14x18x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 4 Pack $39.76 $9.94/ea

2 options
Available in additional 2 options$3976
current price $39.76$9.94/ea
Options from $11.88
Filtrete 14x18x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 4 Pack
4904.4 out of 5 Stars. 490 reviews
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Filtrete 15x20x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter $18.47

Sponsored
$1847
current price $18.47Filtrete 15x20x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter
5364.8 out of 5 Stars. 536 reviews
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100+ bought since yesterday Filtrete 20x20x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter $18.47
100+ bought since yesterday

Sponsored
$1847
current price $18.47Filtrete 20x20x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter
10624.7 out of 5 Stars. 1062 reviews
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Filtrete 12x24x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter $16.49 Was $27.28

Now$1649
current price Now $16.49, Was $27.28$27.28
Filtrete 12x24x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter
5894.8 out of 5 Stars. 589 reviews
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Filtrete 18x20x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 2 Filters $19.88 $9.94/ea

3 options
Available in additional 3 options$1988
current price $19.88$9.94/ea
Options from $11.88
Filtrete 18x20x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 2 Filters
6454.5 out of 5 Stars. 645 reviews
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GermGuardian Air Purifier Replacement Filter B, FLT4825, HEPA Pure, AC4820, AC4825 $19.88

4 sizes
Available in additional 4 sizes$1988
current price $19.88Options from $19.88 – $29.99
GermGuardian Air Purifier Replacement Filter B, FLT4825, HEPA Pure, AC4820, AC4825
17574.8 out of 5 Stars. 1757 reviews
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Filtrete 15x20x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter $18.47

$1847
current price $18.47Filtrete 15x20x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter
5364.8 out of 5 Stars. 536 reviews
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Filtrete 12x36x1 Air Filter, MPR 300 MERV 5, Dust Reduction, 1 Filter $5.64

$564
current price $5.64Filtrete 12x36x1 Air Filter, MPR 300 MERV 5, Dust Reduction, 1 Filter
844.3 out of 5 Stars. 84 reviews
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100+ bought since yesterday Filtrete 20x20x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter $18.47
100+ bought since yesterday

$1847
current price $18.47Filtrete 20x20x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter
10624.7 out of 5 Stars. 1062 reviews
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Best seller Filtrete 24x24x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter $18.47
Best seller

$1847
current price $18.47Filtrete 24x24x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter
6074.8 out of 5 Stars. 607 reviews
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Filtrete 12x12x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter $16.48 Was $18.47

Now$1648
current price Now $16.48, Was $18.47$18.47
Filtrete 12x12x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter
5644.8 out of 5 Stars. 564 reviews
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Filtrete 12x12x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter $16.48 Was $18.47

Sponsored
Now$1648
current price Now $16.48, Was $18.47$18.47
Filtrete 12x12x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter
5644.8 out of 5 Stars. 564 reviews
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Filtrete 20x22x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 4 Pack $41.17 $10.29/ea

Sponsored
$4117
current price $41.17$10.29/ea
Options from $11.88
Filtrete 20x22x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 4 Pack
1963.9 out of 5 Stars. 196 reviews
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Filtrete 10x20x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 4 Pack $39.76 $9.94/ea

2 options
Available in additional 2 options$3976
current price $39.76$9.94/ea
Options from $11.88
Filtrete 10x20x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 4 Pack
1754 out of 5 Stars. 175 reviews
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Filtrete 15x20x1 Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 4 Filters $39.76

2 options
Available in additional 2 options$3976
current price $39.76Options from $11.88
Filtrete 15x20x1 Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 4 Filters
2224.1 out of 5 Stars. 222 reviews
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Best seller Filtrete 14x14x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 2 Filters $19.88 $9.94/ea
Best seller

3 options
Available in additional 3 options$1988
current price $19.88$9.94/ea
Options from $11.88
Filtrete 14x14x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 2 Filters
3834.3 out of 5 Stars. 383 reviews
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Filtrete 14x30x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergen Defense, 1 Filter $15.29

$1529
current price $15.29Filtrete 14x30x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergen Defense, 1 Filter
5314.7 out of 5 Stars. 531 reviews
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Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 2 Filters $19.88 $9.94/ea

3 options
Available in additional 3 options$1988
current price $19.88$9.94/ea
Options from $11.88
Filtrete 18x18x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 2 Filters
3764.3 out of 5 Stars. 376 reviews
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Filtrete 12x36x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 4 Pack $43.01 $10.75/ea

2 options
Available in additional 2 options$4301
current price $43.01$10.75/ea
Options from $11.88
Filtrete 12x36x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 4 Pack
1543.7 out of 5 Stars. 154 reviews
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Filtrete 16x24x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 2 Filters $19.88 $9.94/ea

3 options
Available in additional 3 options$1988
current price $19.88$9.94/ea
Options from $11.88
Filtrete 16x24x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 2 Filters
3564.2 out of 5 Stars. 356 reviews
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Filtrete 15x20x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergen Defense, 1 Filter $13.89

$1389
current price $13.89Filtrete 15x20x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergen Defense, 1 Filter
5194.7 out of 5 Stars. 519 reviews
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100+ bought since yesterday Filtrete 20x30x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter $18.47
100+ bought since yesterday

Sponsored
$1847
current price $18.47Filtrete 20x30x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter
7714.7 out of 5 Stars. 771 reviews
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Filtrete 20x24x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter $18.47

Sponsored
$1847
current price $18.47Filtrete 20x24x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter
6434.7 out of 5 Stars. 643 reviews
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Filtrete 14x30x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter $18.47

$1847
current price $18.47Filtrete 14x30x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter
5924.7 out of 5 Stars. 592 reviews
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100+ bought since yesterday Filtrete 20x30x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter $18.47
100+ bought since yesterday

$1847
current price $18.47Filtrete 20x30x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter
7714.7 out of 5 Stars. 771 reviews
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Hamilton Beach True Air Replacement Carbon Filter 3 Pack | Model# 04234G $22.00

$2200
current price $22.00Hamilton Beach True Air Replacement Carbon Filter 3 Pack | Model# 04234G
584.5 out of 5 Stars. 58 reviews
Free shipping, arrives in 3+ days
Filtrete 12x24x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergen Defense, 1 Filter $13.44

$1344
current price $13.44Filtrete 12x24x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergen Defense, 1 Filter
5374.7 out of 5 Stars. 537 reviews
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Filtrete 14x25x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter $18.47

$1847
current price $18.47Filtrete 14x25x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter
6204.7 out of 5 Stars. 620 reviews
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Filtrete 18x25x1 Air Filter, MPR 300 MERV 5, Dust Reduction, 1 Filter $5.64

$564
current price $5.64Filtrete 18x25x1 Air Filter, MPR 300 MERV 5, Dust Reduction, 1 Filter
824.1 out of 5 Stars. 82 reviews
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Filtrete 20x22x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 4 Pack $41.17 $10.29/ea

2 options
Available in additional 2 options$4117
current price $41.17$10.29/ea
Options from $11.88
Filtrete 20x22x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 4 Pack
1963.9 out of 5 Stars. 196 reviews
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Filtrete 16x20x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 4 Pack $39.76 $9.94/ea

2 options
Available in additional 2 options$3976
current price $39.76$9.94/ea
Options from $39.76 – $59.64
Filtrete 16x20x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 4 Pack
2624.2 out of 5 Stars. 262 reviews
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AIRCARE HDC12 Replacement Humidifier Filter $20.99

3 options
Available in additional 3 options$2099
current price $20.99Options from $20.99 – $55.99
AIRCARE HDC12 Replacement Humidifier Filter
1574.6 out of 5 Stars. 157 reviews
Free shipping, arrives in 3+ days
Filtrete 20x24x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter $18.47

$1847
current price $18.47Filtrete 20x24x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter
6434.7 out of 5 Stars. 643 reviews
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Filtrete 14x24x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergen Defense, 1 Filter $13.44

$1344
current price $13.44Filtrete 14x24x1 HVAC Furnace Air Filter, MPR 1000 MERV 11, Allergen Defense, 1 Filter
5544.7 out of 5 Stars. 554 reviews
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Filtrete 12x30x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 4 Pack $39.76 $9.94/ea

2 options
Available in additional 2 options$3976
current price $39.76$9.94/ea
Options from $11.88
Filtrete 12x30x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 4 Pack
1723.8 out of 5 Stars. 172 reviews
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Filtrete 12x12x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 2 Filters $19.88 $9.94/ea

3 options
Available in additional 3 options$1988
current price $19.88$9.94/ea
Options from $11.88
Filtrete 12x12x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 2 Filters
3344.3 out of 5 Stars. 334 reviews
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12x20x1 (11.75 x 19.75) PURAFILTER 2000® Allergen 8000 MERV 8 Air Filter $14.19

$1419
current price $14.1912x20x1 (11.75 x 19.75) PURAFILTER 2000® Allergen 8000 MERV 8 Air Filter
84.8 out of 5 Stars. 8 reviews
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Filtrete 14x25x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 2 Filters $19.88 $9.94/ea

3 options
Available in additional 3 options$1988
current price $19.88$9.94/ea
Options from $11.88
Filtrete 14x25x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 2 Filters
5884.4 out of 5 Stars. 588 reviews
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Filtrete 12x20x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 2 Filters $19.88 $9.94/ea

3 options
Available in additional 3 options$1988
current price $19.88$9.94/ea
Options from $11.88
Filtrete 12x20x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 2 Filters
3574.3 out of 5 Stars. 357 reviews
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Filtrete 18x24x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 2 Filters $19.88 $9.94/ea

3 options
Available in additional 3 options$1988
current price $19.88$9.94/ea
Options from $11.88
Filtrete 18x24x1 HVAC Furnace Air Filter, MPR 800 MERV 10, Micro Particle Reduction, 2 Filters
5394.4 out of 5 Stars. 539 reviews
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Filtrete 20x25x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter $18.47

$1847
current price $18.47Filtrete 20x25x1 HVAC Furnace Air Filter, MPR 1500 MERV 12, Allergen, Bacteria and Virus, 1 Filter
8974.7 out of 5 Stars. 897 reviews
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