Top 10 AC Filters 18x24x1 – Furnace Filters

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1. Filtrete

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6-Pack exact dimensions 17.81 x 23.81 x 0.81, Clean Living Basic Dust, Filtrete 18x24x1, AC Furnace Air Filter, MPR 300

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Filtrete #ad - Lasts up to 3 months. Ideal for high-velocity heating and cooling systems. Electrostatically charged fibers attracts and capture large airborne allergens like: Pollen, Household Dust, Lint. Packaging and filter media may vary for MPR 300 Microparticle performance rating MPR 300 equates to Minimum Efficiency Reporting Value MERV 5.
BrandFiltrete #ad
Manufacturer3M #ad
Height17.81 Inches
Length23.81 Inches
Width0.81 Inches
Part NumberMPR 300
ModelBD21-6PK-1E

2. Filtrete

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MPR 1000, Micro Allergen Defense, Filtrete 18x24x1, AC Furnace Air Filter, 2-Pack exact dimensions 17.81 x 23.81 x 0.81

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Filtrete #ad - Filters, and at least every 12 months for 4 in. Sign-up for a filter change reminder program that works for you! For residential use only. 1000 mpr has a rating of MERV 11. A dirty filter will slow down air flow and make the system work harder to keep you warm or cool--wasting energy.

Find your size: 1000 mpr available in 4in. 4in. The higher the mpr, the more microparticles--such as pollen, smoke, pet dander, bacteria and viruses--your filter will capture from the air passing through it. Filters. Designed with exclusive filtrete brand 3-in-1 technology from 3M to trap unwanted air particles while letting cleaner air flow through. For optimal performance of your heating & cooling system or hvac system, change your home air filter at least every 90 days for 1 in.

Simply use the app to scan the barcode on your filter’s packaging, then choose 30, 60 or 90 days for your replacement countdown. Slim fit and 5in. When the lifespan is up, you’ll get a notification to change your filter. Attracts and captures particles such as lint, pet dander, pollen, dust, smoke and smog. Home air filters for your furnace, air conditioner or HVAC system. Thick air filters.
BrandFiltrete #ad
Manufacturer3M #ad
Height1 Inches
Length24 Inches
Width18 Inches
Part NumberAD21-2PK-6E
ModelAD21-2PK-6E
WarrantyLimited Warranty

3. Filtrete

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Filtrete 18x24x1, AC Furnace Air Filter, MPR 1900, 2-Pack exact dimensions 17.81 x 23.81 x 0.78, Healthy Living Ultimate Allergen

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Filtrete #ad - Slim fit and 5 in. A dirty filter will slow down air flow and make the system work harder to keep you warm or cool--wasting energy. 62% small particle capture, like bacteria and particles that carry viruses % captured is based on ASHRAE 52. 2 testing for 03 to 1 micron particles from the air passing through the filter, which relates to HVAC industry standard efficiency testing.

Outperforms fiberglass, washable and non-electrostatic 3-month pleated 1 in. Thick air filters. The higher the mpr, smoke, pet dander, the more microparticles--such as pollen, bacteria and viruses--your filter will capture from the air passing through it.11900 mpr has a rating of MERV 13. For optimal performance of your heating & cooling system or hvac system, change your home air filter at least every 90 days for 1 in. Certified as asthma & allergy friendly As outlined in report ASCR: 1246-01.

Designed with exclusive filtrete brand 3-in-1 technology from 3M to trap unwanted air particles while letting cleaner air flow through. Sign-up for a filter change reminder program that works for you! Attracts and captures microscopic particles such as smoke, including lint, cough and sneeze debris, bacteria and viruses--and large particles, household dust and pollen. Home air filters for your furnace, air conditioner or HVAC system. Find your size: 1900 mpr available in 4 in.
BrandFiltrete #ad
Manufacturer3M #ad
Height17.81 Inches
Length23.81 Inches
Width0.78 Inches
Part NumberUT21-2PK-6E
ModelUT21-2PK-6E
WarrantyLimited Warranty

4. Filtrete

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2-Pack exact dimensions 17.81 x 23.81 x 0.78, Healthy Living Ultra Allergen, AC Furnace Air Filter, Filtrete 18x24x1, MPR 1500

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Filtrete #ad - Carries a 1500 microparticle Performance Rating MPR. Electrostatically charged to attract and capture microscopic airborne particles. Helps promote a healthy home by reducing airborne dust, allergens, bacteria & viruses.

3 times better at small particle capture compared to non-electrostatic pleated filters for the capture of 03 to 1. 0 micron particles. Electrostatic air filter with Microparticle Performance Rating 15004x better small bacteria and virus capture {Refers to bacteria and viruses that are less than 1 micron in size}. Lasts up to 3 months. Captures microscopic particles including: smoke, cough/sneeze debris, bacteria, viruses, and large particles like lint, dust and pollen. Designed with filtrete brand 3-in-1 technology from 3M to pull in and trap unwanted air particles while letting clean air flow through.
BrandFiltrete #ad
ManufacturerFiltrete #ad
Height17.81 Inches
Length19.81 Inches
Weight1.3 Pounds
Width0.78 Inches
Part NumberUR21-2PK-6E
ModelUR21-2PK-1E
WarrantyAs labelled

5. Filtrete

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Healthy Living Ultra Allergen, Filtrete 18x24x1, MPR 1500, AC Furnace Air Filter, 4-Pack exact dimensions 17.81 x 23.81 x 0.78

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Filtrete #ad - Thick air filters. When the lifespan is up, then choose 30, you’ll get a notification to change your filter. Sign-up for a filter change reminder program that works for you! CREATE A CHANGE COUNTDOWN in the Filtrete Smart app. For optimal performance of your heating & cooling system or hvac system, change your home air filter at least every 90 days for 1in.

Slim fit and 5 in. Outperforms fiberglass, washable and non-electrostatic 3-month pleated 1 in. A dirty filter will slow down air flow and make the system work harder to keep you warm or cool - wasting energy. And 5 in. Simply use the app to scan the barcode on your filter’s packaging, 60 or 90 days for your replacement countdown. Filters, and at least every 12 months for 4 in.

Certified as asthma & allergy friendly As outlined in report ASCR: 1246-01. Attracts and captures microscopic particles such as smoke, bacteria and viruses - and large particles, cough and sneeze debris, including lint, household dust and pollen. Find your size: 1500 mpr available in 4 in. 4 in. The higher the mpr, pet dander, smoke, the more microparticles - such as pollen, bacteria and viruses - your filter will capture from the air passing through it. Filters.
BrandFiltrete #ad
ManufacturerFiltrete #ad
Height17.81 Inches
Length23.81 Inches
Width0.78 Inches
Part Number2021-4PK
Model2021-4PK
WarrantyCall 1-800-494-3552 for warranty questions

6. FilterBuy

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Pleated HVAC AC Furnace Filters 4-Pack, Silver, FilterBuy 18x24x1 Air Filter MERV 8

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FilterBuy #ad - Merv 8 synthetic media comparable with mpr 600 & FPR 5 protects homes from dust, pollen, and more by trapping 90% of airborne particles without impacting air flow.

High-quality construction features an electrostatically charged, pleated design that captures more harmful particles and prolongs the products lifespan by 3 times that of fiberglass models. Industrial-grade beverage board frames with dual wire backings outperform standard cardboard designs. 18x24x1 replacement air filters for your furnace, air conditioner, or HVAC system actual size: 17. 38 x 23. 38 x 075 inches. All components are manufactured within the United States and designed with recyclable materials.
BrandFilterBuy #ad
ManufacturerFilterBuy #ad
Height0.75 Inches
Length17.38 Inches
Width23.38 Inches
Part NumberAFB18x24x1M8pk4
ModelAFB18x24x1M8pk4

7. Nordic Pure

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Nordic Pure 18x24x1 MERV 12 Pleated AC Furnace Air Filters 6 Pack

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Nordic Pure #ad - Attracts indoor allergens, dust, pollen and other airborne contaminants. Nominal size: 18 x 24 x 1, actual size: 17 1/2 x 23 1/2 x 3/4 17. 5 x 23. 5 x 075. Made in the USA. Hypoallergenic and antimicrobial pleated electrostatic filter material. Nordic pure recommends changing 1” air filters every 30-90 days.
BrandNordic Pure #ad
ManufacturerNordic Pure #ad
Height24 Inches
Length18 Inches
Weight4.41 Pounds
Width1 Inches
Part Number18x24x1M12-6
Model18x24x1
WarrantyPlease Contact the seller directly for warranty information about this product

8. Filtrete

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6-Pack  exact dimensions 17.81 x 23.81 x 0.81, Allergen Defense Odor Reduction, MPR 1200, Filtrete 18x24x1, AC Furnace Air Filter

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Filtrete #ad - 1200 odor mpr has a rating of MERV 11. For optimal performance of your heating & cooling system or hvac system, change your home air filter at least every 90 days for 1in. Home air filters for your furnace, air conditioner or HVAC system. 25 times more effective in odor removal than other national retail home air filters, based on a comparison of organic vapor capacity.

Active carbon layer acts as odor eliminator for pet smells, smoke, cooking, mildew and cleaning chemicals. And 5 in. Designed with exclusive filtrete brand 3-in-1 technology from 3M to trap unwanted air particles while letting cleaner air flow through. A dirty filter will slow down air flow and make the system work harder to keep you warm or cool--wasting energy.

Attracts and captures particles such as lint, pet dander, pollen, dust, smoke and smog. The higher the mpr, smoke, pet dander, the more microparticles--such as pollen, bacteria and viruses--your filter will capture from the air passing through it. Sign-up for a filter change reminder program that works for you! For residential use only. Filters, and at least every 12 months for 4 in. Filters. Outperforms fiberglass, washable and non-electrostatic 3-month pleated 1 in.
BrandFiltrete #ad
Manufacturer3M #ad
Height17.81 Inches
Length23.81 Inches
Weight1.26 Pounds
Width0.81 Inches
Part NumberHOME21-6E
ModelAOR21-6PK-2E

9. FilterBuy

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Silver, Pleated HVAC AC Furnace Filters 6-Pack, FilterBuy 18x24x1 Air Filter MERV 8

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FilterBuy #ad - All components are manufactured within the United States and designed with recyclable materials. 18x24x1 replacement air filters for your furnace, air conditioner, or HVAC system actual size: 17.

38 x 23. 38 x 075 inches. Industrial-grade beverage board frames with dual wire backings outperform standard cardboard designs. High-quality construction features an electrostatically charged, pleated design that captures more harmful particles and prolongs the products lifespan by 3 times that of fiberglass models. Merv 8 synthetic media comparable with mpr 600 & FPR 5 protects homes from dust, pollen, and more by trapping 90% of airborne particles without impacting air flow.
BrandFilterBuy #ad
ManufacturerFilterBuy #ad
Height0.75 Inches
Length17.38 Inches
Width23.38 Inches
Part NumberAFB18x24x1M8pk6
ModelAFB18x24x1M8pk6

10. FilterBuy

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FilterBuy 18x24x1 Air Filter MERV 11, Pleated HVAC AC Furnace Filters 4-Pack, Gold

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FilterBuy #ad - Industrial-grade beverage board frames with dual wire backings outperform standard cardboard designs. Merv 11 synthetic media comparable with mpr 1000-1200 & FPR 7 protects homes from pets or allergies by trapping 95% of airborne particles without impacting air flow.

18x24x1 replacement air filters for your furnace, air conditioner, or HVAC system actual size: 17. 38 x 23. 38 x 075 inches. High-quality construction features an electrostatically charged, pleated design that captures more harmful particles and prolongs the products lifespan by 3 times that of fiberglass models. All components are manufactured within the United States and designed with recyclable materials.
BrandFilterBuy #ad
ManufacturerFilterBuy #ad
Height0.75 Inches
Length17.38 Inches
Weight100 Kilograms
Width23.38 Inches
Part NumberAFB18x24x1M11pk4
ModelAFB18x24x1M11pk4