Quality Furnace Filters at Your Fingertips

Grab limited-time offers on top-rated Furnace Filters before they’re gone.

Crisp Filters, 16x25x1 Air Filter, MERV 11, MPR 1000, AC Furnace Air Filter, 6-Pack

Crisp Filters, 16x25x1 Air Filter, MERV 11, MPR 1000, AC Furnace Air Filter, 6-Pack

4.7
USStore
674 Br
Simply Filters 16x20x1 MERV 8, MPR 600, Air Filter ( 6 Pack) - Actual Size: 15.75"x19.75"x0.75" HVAC, AC Furnace Air Filter

Simply Filters 16x20x1 MERV 8, MPR 600, Air Filter ( 6 Pack) - Actual Size: 15.75"x19.75"x0.75" HVAC, AC Furnace Air Filter

4.7
USStore
644 Br
Filtrete20x25x5 Air Filter MPR 1550 DP MERV 12, Healthy Living Ultra Allergen Deep Pleat, 1-Pack, Fits Lennox & Honeywell Devices (exact dimensions 19.56 x 24.19 x 4.69)

Filtrete20x25x5 Air Filter MPR 1550 DP MERV 12, Healthy Living Ultra Allergen Deep Pleat, 1-Pack, Fits Lennox & Honeywell Devices (exact dimensions 19.56 x 24.19 x 4.69)

4.6
UKStore
1 689 Br
Lennox Healthy Climate Lennox X6672 16x25x5 Healthy Climate Carbon-Clean MERV 16 Filter Bundle with Same Day Supply Filter Change Reminder Magnet (2-Pack) 2 Count (Pack of 1)

Lennox Healthy Climate Lennox X6672 16x25x5 Healthy Climate Carbon-Clean MERV 16 Filter Bundle with Same Day Supply Filter Change Reminder Magnet (2-Pack) 2 Count (Pack of 1)

4.8
USStore
2 609 Br
Filterbuy 20x25x5 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters for Honeywell FC100A1037, Lennox X6673, Carrier, and More (Actual Size: 19.88 x 24.75 x 4.38 Inches)

Filterbuy 20x25x5 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters for Honeywell FC100A1037, Lennox X6673, Carrier, and More (Actual Size: 19.88 x 24.75 x 4.38 Inches)

4.6
USStore
1 789 Br
NOLITOY Dust Control Vent Filters 10pcs Air Conditioning Filter Replacement Furnace Air Filter Paper Air Conditioner Supplie for Furnace Air Conditioner Vent 39x34CM Kitchen Hood Filter

NOLITOY Dust Control Vent Filters 10pcs Air Conditioning Filter Replacement Furnace Air Filter Paper Air Conditioner Supplie for Furnace Air Conditioner Vent 39x34CM Kitchen Hood Filter

UKStore
37 Br
LennoxHealthy Climate X6673 20x25x5 MERV 11 Filter-Actual Size 19-3/4" X 24-3/4" X 4-3/8"; PACK OF 3 FILTERS | Replacement for Honeywell HW 1037

LennoxHealthy Climate X6673 20x25x5 MERV 11 Filter-Actual Size 19-3/4" X 24-3/4" X 4-3/8"; PACK OF 3 FILTERS | Replacement for Honeywell HW 1037

4.8
USStore
2 009 Br
Filtrete 20x25x4 AC Furnace Air Filter, MPR 1550, MERV 12, Fits Lennox & Honeywell, Allergen, Bacteria & Virus, Electrostatic Air Cleaning Filter, 2-Pack (actual size 19.88 x 24.63 x 4.31)

Filtrete 20x25x4 AC Furnace Air Filter, MPR 1550, MERV 12, Fits Lennox & Honeywell, Allergen, Bacteria & Virus, Electrostatic Air Cleaning Filter, 2-Pack (actual size 19.88 x 24.63 x 4.31)

4.7
USStore
1 179 Br
UBeesize 16x25x1 Reusable Air Filter (9-Pack) - MERV 8 MPR 700 HVAC AC Furnace Air Filters (Actual Size:15.75 x 24.50 x 0.75 Inches) - 1x Reusable ABS Frame+9 x Filter,Breathe Fresher

UBeesize 16x25x1 Reusable Air Filter (9-Pack) - MERV 8 MPR 700 HVAC AC Furnace Air Filters (Actual Size:15.75 x 24.50 x 0.75 Inches) - 1x Reusable ABS Frame+9 x Filter,Breathe Fresher

4.3
USStore
159 Br
BNX TruFilter 20x20x1 MERV 13 (4-Pack) AC Furnace Air Filter - MADE IN USA - Electrostatic Pleated Air Conditioner HVAC AC Furnace Filters - Removes Pollen, Mold, Bacteria, Smoke

BNX TruFilter 20x20x1 MERV 13 (4-Pack) AC Furnace Air Filter - MADE IN USA - Electrostatic Pleated Air Conditioner HVAC AC Furnace Filters - Removes Pollen, Mold, Bacteria, Smoke

4.6
USStore
804 Br
Crisp Filters, 16x25x1 Air Filter, MERV 8, MPR 600, AC Furnace Air Filter, 6-Pack

Crisp Filters, 16x25x1 Air Filter, MERV 8, MPR 600, AC Furnace Air Filter, 6-Pack

4.7
USStore
544 Br
Filterbuy 20x25x5 Air Filter MERV 11 Allergen Defense (4-Pack), Pleated HVAC AC Furnace Air Filters for Honeywell FC100A1037, Lennox X6673, Carrier, and More (Actual Size: 19.88 x 24.75 x 4.38 Inches)

Filterbuy 20x25x5 Air Filter MERV 11 Allergen Defense (4-Pack), Pleated HVAC AC Furnace Air Filters for Honeywell FC100A1037, Lennox X6673, Carrier, and More (Actual Size: 19.88 x 24.75 x 4.38 Inches)

4.6
USStore
2 289 Br
FiltreteElectrostatic Deep Pleat Air Filter 1000 MPR, 20 in x 25 in x 4 in - 4 Units per Case

FiltreteElectrostatic Deep Pleat Air Filter 1000 MPR, 20 in x 25 in x 4 in - 4 Units per Case

4.7
UKStore
2 489 Br
BNX TruFilter 20x25x1 MERV 13 (4-Pack) AC Furnace Air Filter,MADE IN USA,Electrostatic Pleated Air Conditioner HVAC AC Furnace Filters, Bacteria, Smoke (Actual Size: 19 11/16’’x24 11/16’’x3/4‘’)

BNX TruFilter 20x25x1 MERV 13 (4-Pack) AC Furnace Air Filter,MADE IN USA,Electrostatic Pleated Air Conditioner HVAC AC Furnace Filters, Bacteria, Smoke (Actual Size: 19 11/16’’x24 11/16’’x3/4‘’)

4.5
UKStore
2 279 Br
Aerostar16x25x1 MERV 11 Pleated Air Filter, AC Furnace Air Filter, 4 Pack (Actual Size: 15 3/4"x24 3/4"x3/4")

Aerostar16x25x1 MERV 11 Pleated Air Filter, AC Furnace Air Filter, 4 Pack (Actual Size: 15 3/4"x24 3/4"x3/4")

4.7
USStore
639 Br
PUREBURG Carbon Filter,Cut-to-Fit Carbon Pad 16 x 48 inches for Charcoal Sheet fits Range Hoods Furnace Filters, Air Purifier,Food cycler filter. Kitchen Compost Bins,Removes Odor VOC, 2-Pack

PUREBURG Carbon Filter,Cut-to-Fit Carbon Pad 16 x 48 inches for Charcoal Sheet fits Range Hoods Furnace Filters, Air Purifier,Food cycler filter. Kitchen Compost Bins,Removes Odor VOC, 2-Pack

4.5
UKStore
91 Br
HoneywellHome 20x25x4 MERV 8, AC Furnace Air Filter, 3 PACK (CF100A1025-3PKAM) (Actual Dimensions: 19.94 x 24.87 x 4.38 in.)

HoneywellHome 20x25x4 MERV 8, AC Furnace Air Filter, 3 PACK (CF100A1025-3PKAM) (Actual Dimensions: 19.94 x 24.87 x 4.38 in.)

4.7
USStore
1 649 Br
Nordic Pure 16x25x1M8-3 MERV 8 AC Furnace Filter 16x25x1 Merv 8 AC Furnace Filters Qty 3

Nordic Pure 16x25x1M8-3 MERV 8 AC Furnace Filter 16x25x1 Merv 8 AC Furnace Filters Qty 3

UKStore
248 BYN
Filterbuy 16x25x5 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters for Honeywell FC100A1029, Lennox X6670, Carrier, Bryant, & More (Actual Size: 15.75 x 24.75 x 4.38)

Filterbuy 16x25x5 Air Filter MERV 8 Dust Defense (4-Pack), Pleated HVAC AC Furnace Air Filters for Honeywell FC100A1029, Lennox X6670, Carrier, Bryant, & More (Actual Size: 15.75 x 24.75 x 4.38)

4.6
USStore
2 219 Br
Filtrete 20x25x1, AC Furnace Air Filter, MPR 1900, Healthy Living Ultimate Allergen, 4-Pack (exact dimensions 19.69 x 24.69 x 0.78)

Filtrete 20x25x1, AC Furnace Air Filter, MPR 1900, Healthy Living Ultimate Allergen, 4-Pack (exact dimensions 19.69 x 24.69 x 0.78)

4.8
UKStore
925 Br
BNX TruFilter 16x20x1 Air Filter MERV 13 (4-Pack) - MADE IN USA - Electrostatic Pleated Air Conditioner HVAC AC Furnace Filters for Allergies, Pollen, Mold, Bacteria, Smoke, Allergen, MPR 1900 FPR 10

BNX TruFilter 16x20x1 Air Filter MERV 13 (4-Pack) - MADE IN USA - Electrostatic Pleated Air Conditioner HVAC AC Furnace Filters for Allergies, Pollen, Mold, Bacteria, Smoke, Allergen, MPR 1900 FPR 10

4.6
UKStore
1 059 Br
Filtrete Electrostatic Deep Pleat Air Filter 1000 MPR, 20 in x 25 in x 4 in - 4 Units per Case

Filtrete Electrostatic Deep Pleat Air Filter 1000 MPR, 20 in x 25 in x 4 in - 4 Units per Case

4.7
USStore
1 779 Br
Filtrete 14x14x1 Air Filter MPR 1200D MERV 11, Allergen Reduction Plus Dust, 4-Pack Filters (exact dimensions 13.81x13.81x0.81)

Filtrete 14x14x1 Air Filter MPR 1200D MERV 11, Allergen Reduction Plus Dust, 4-Pack Filters (exact dimensions 13.81x13.81x0.81)

4.8
USStore
194 Br
Filterbuy 16x25x1 Air Filter MERV 8 Dust Defense (12-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 15.50 x 24.50 x 0.75 Inches)

Filterbuy 16x25x1 Air Filter MERV 8 Dust Defense (12-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 15.50 x 24.50 x 0.75 Inches)

4.8
USStore
304 Br
Filterbuy 20x25x5 Air Filter MERV 11 Allergen Defense (2-Pack), Pleated HVAC AC Furnace Air Filters for Honeywell FC100A1037, Lennox X6673, Carrier, & More (Actual Size: 19.88 x 24.75 x 4.38 Inches)

Filterbuy 20x25x5 Air Filter MERV 11 Allergen Defense (2-Pack), Pleated HVAC AC Furnace Air Filters for Honeywell FC100A1037, Lennox X6673, Carrier, & More (Actual Size: 19.88 x 24.75 x 4.38 Inches)

4.6
USStore
1 609 Br
Filterbuy 12x12x1 Air Filter MERV 13 Optimal Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 11.69 x 11.69 x 0.75 Inches)

Filterbuy 12x12x1 Air Filter MERV 13 Optimal Defense (4-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 11.69 x 11.69 x 0.75 Inches)

4.7
UKStore
FREE
Nordic Pure 16x20x1M12-6 MERV 12 Pleated Air Condition Furnace Filter, Box of 6

Nordic Pure 16x20x1M12-6 MERV 12 Pleated Air Condition Furnace Filter, Box of 6

4.7
UKStore
1 589 Br
Filterbuy 20x25x5 Air Filter MERV 13 Optimal Defense (4-Pack), Pleated HVAC AC Furnace Air Filters for Honeywell FC100A1037, Lennox X6673, Carrier, and More (Actual Size: 19.88 x 24.75 x 4.38 Inches)

Filterbuy 20x25x5 Air Filter MERV 13 Optimal Defense (4-Pack), Pleated HVAC AC Furnace Air Filters for Honeywell FC100A1037, Lennox X6673, Carrier, and More (Actual Size: 19.88 x 24.75 x 4.38 Inches)

4.5
USStore
2 559 Br
Aerostar 12x12x1 MERV 13 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual Size: 11 3/4" x 11 3/4" x 3/4")

Aerostar 12x12x1 MERV 13 Pleated Air Filter, AC Furnace Air Filter, 6 Pack (Actual Size: 11 3/4" x 11 3/4" x 3/4")

4.6
UKStore
666 Br
Filtrete18x30x1 AC Furnace Air Filter, MERV 12, MPR 1500, CERTIFIED asthma & allergy friendly, 3 Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 6-Pack (Actual Size 17.81x29.81x0.78 in)

Filtrete18x30x1 AC Furnace Air Filter, MERV 12, MPR 1500, CERTIFIED asthma & allergy friendly, 3 Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 6-Pack (Actual Size 17.81x29.81x0.78 in)

4.8
USStore
2 649 Br
Filtrete16x25x4, AC Furnace Air Filter, MPR 1550 DP, Healthy Living Ultra Allergen Deep Pleat, 2-Pack (actual dimensions 15.88 x 24.56 x 4.31)

Filtrete16x25x4, AC Furnace Air Filter, MPR 1550 DP, Healthy Living Ultra Allergen Deep Pleat, 2-Pack (actual dimensions 15.88 x 24.56 x 4.31)

4.7
USStore
1 659 Br
Anycore 20x20x1 AC Furnace Air Filter, MPR 1000, 2 Pcs MERV 11 Pleated HVAC Filter (exact dimensions 19.69x19.69x0.81 inch)

Anycore 20x20x1 AC Furnace Air Filter, MPR 1000, 2 Pcs MERV 11 Pleated HVAC Filter (exact dimensions 19.69x19.69x0.81 inch)

UKStore
729 Br
Filterbuy 20x25x4 Air Filter MERV 13 Optimal Defense (6-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 19.50 x 24.50 x 3.63 Inches)

Filterbuy 20x25x4 Air Filter MERV 13 Optimal Defense (6-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 19.50 x 24.50 x 3.63 Inches)

4.5
USStore
2 709 Br
Filterbuy 12x12x1 Air Filter MERV 8 Dust Defense (2-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 11.69 x 11.69 x 0.75 Inches)

Filterbuy 12x12x1 Air Filter MERV 8 Dust Defense (2-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 11.69 x 11.69 x 0.75 Inches)

4.7
UKStore
914 Br
AprilAire 216 Replacement Filter for AprilAire Whole House Air Purifiers - MERV 16, Allergy, Asthma, & Virus, 20x25x4 Air Filter (Pack of 2)

AprilAire 216 Replacement Filter for AprilAire Whole House Air Purifiers - MERV 16, Allergy, Asthma, & Virus, 20x25x4 Air Filter (Pack of 2)

4.8
USStore
3 389 Br
Biodefensor Rigid Reusable Air Filter 20x30x1, Made in USA - Cut to Fit Furnace, Air Conditioner, HVAC - Durable Washable AC Filter, High Airflow Energy-Efficient Includes Prep Pad & Hook Tape, 1-Pack

Biodefensor Rigid Reusable Air Filter 20x30x1, Made in USA - Cut to Fit Furnace, Air Conditioner, HVAC - Durable Washable AC Filter, High Airflow Energy-Efficient Includes Prep Pad & Hook Tape, 1-Pack

4.6
USStore
442 Br
Universal Cut to Fit Carbon Pad Pre Filter Roll for Air Purifiers Furnace Filters and Air Conditioner Filters (1)

Universal Cut to Fit Carbon Pad Pre Filter Roll for Air Purifiers Furnace Filters and Air Conditioner Filters (1)

4.5
UKStore
407 Br
Filtrete 12x12x1 AC Furnace Air Filter, MERV 5, MPR 300, Capture Unwanted Particles, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 6-Pack (Actual Size11.81x11.81x0.81 in)

Filtrete 12x12x1 AC Furnace Air Filter, MERV 5, MPR 300, Capture Unwanted Particles, 3-Month Pleated 1-Inch Electrostatic Air Cleaning Filter, 6-Pack (Actual Size11.81x11.81x0.81 in)

4.7
UKStore
859 Br
Filterbuy 24x25x4 Air Filter MERV 8 Dust Defense (2-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 23.75 x 24.75 x 3.75 Inches)

Filterbuy 24x25x4 Air Filter MERV 8 Dust Defense (2-Pack), Pleated HVAC AC Furnace Air Filters Replacement (Actual Size: 23.75 x 24.75 x 3.75 Inches)

4.5
USStore
213 Br
Filtrete16x20x1, AC Furnace Air Filter, MPR 1000, Micro Allergen Defense, 2-Pack (exact dimensions 15.719 x 19.719 x 0.84)

Filtrete16x20x1, AC Furnace Air Filter, MPR 1000, Micro Allergen Defense, 2-Pack (exact dimensions 15.719 x 19.719 x 0.84)

4.8
UKStore
864 Br
Filtrete 20x25x1 Air Filter, MPR 600, MERV 7, Clean Living Dust Reduction 3-Month Pleated 1-Inch Air Filters, 6 Filters

Filtrete 20x25x1 Air Filter, MPR 600, MERV 7, Clean Living Dust Reduction 3-Month Pleated 1-Inch Air Filters, 6 Filters

4.7
USStore
1 059 Br