Top 10 Furnace Filters 20x25x1 MERV 4 – Furnace Filters

As an Amazon Associate I earn from qualifying purchases.

1. Filtrete

#ad

MPR 300, AC Furnace Air Filter, 6-Pack exact dimensions 19.69 x 24.69 x 0.81, Filtrete 20x25x1, Clean Living Basic Dust

#ad
Filtrete #ad - Filtrate 300 mpr micro particle Performance Rating equates to MERV 5. Outperforms fiberglass, air conditioner, washable and non electrostatic 3 month pleated 1 inches air filters for your furnace, or HVAC system.

The higher the mpr, pet dander, smoke, the more micro particles such as pollen, bacteria and viruses your filter will capture from the air passing through it. Attracts and captures large particles such as lint, household dust, dust mite debris and mold spores. Exclusive filtrate brand 3 in 1 technology from 3M traps unwanted air particles, while letting cleaner air flow through.

Packaging and filter media may vary for MPR 300 For residential use only. A dirty filter will slow down air flow and make the system work harder to keep you warm or cool wasting energy; Sign up for a filter change reminder program that works for you. For optimum performance, change your home air filter every 90 days or sooner.
BrandFiltrete #ad
ManufacturerFiltrete #ad
Height5.25 Inches
Length24.69 Inches
Weight1 Pounds
Width19.69 Inches
Part NumberBD03-6PK-1E
ModelBD03-6PK-2E
WarrantyLimited Warranty. This product will be free from defects in material and manufacture. 3M MAKES NO OTHER WARRANTIES INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. User is responsible for determining whether the product is fit for a particular purpose and suitable for user’s application. If this 3M product is defective, your exclusive remedy and 3M’s sole obligation shall be, at 3M’s option, to replace the 3M product or refund the purchase price of the 3M product. This warranty does not cover normal wear and tear, or damage resulting from accident, misuse, alteration or lack of reasonable care.

2. Filtrete

#ad

AC Furnace Air Filter, Micro Allergen Defense Deep Pleat, MPR 1000 DP, 2-Pack actual dimensions 19.88 x 24.63 x 4.31, Filtrete 20x25x4

#ad
Filtrete #ad - A dirty filter will slow down air flow and make the system work harder to keep you warm or cool - wasting energy. 1000 and 1200 mpr also available in 4”, 4” slim fit and 5” air filters. Material: Synthetic.

Filtrete 1000 mpr microparticle Performance Rating equates to MERV 11. The higher the mpr, the more microparticles - such as pollen, pet dander, smoke, 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! Outperforms fiberglass, washable and non-electrostatic 3-month pleated 1" home air filters for your furnace, air conditioner, or HVAC system.

For optimal performance, change your home air filter at least every 90 days for 1” filters, and at least every 12 months for 4” and 5” filters. For residential use only. Exclusive filtrete brand 3-in-1 technology from 3M traps unwanted air particles, letting cleaner air flow through.
BrandFiltrete #ad
ManufacturerFiltrete #ad
Height4.31 Inches
Length19.88 Inches
Weight5.92 Pounds
Width24.63 Inches
Part NumberNADP03-2PK-2
ModelNADP03-2PK-2
WarrantyAS LISTED

3. Flanders

#ad

12-Pack, MERV 4, E-Z Flow Air Filter, 20 x 25 x 1-Inch

#ad
Flanders #ad - Compatible with hvac systems requiring filters sized 20" x 25" x 1". Each filter maintains efficiency for up to 30 days. Pack of 12 disposable ul class II rated air filters designed for protection of furnace and central air units. Continuous chipboard design guards against corner separation while the one-sided metal media retainer adds to the filter strength. Merv 4 rating: removes household dust, pollen, and lint.
BrandFlanders #ad
ManufacturerFlanders Corporation #ad
Height25 Inches
Length20 Inches
Weight6.5 Pounds
Width1 Inches
Part Number10155.012025
Model10155.012025

4. Aerostar

#ad

AC Furnace Air Filter, Aerostar 20x25x1 MERV 13 Pleated Air Filter, 6 Pack Actual Size: 19 3/4"x 24 3/4" x 3/4"

#ad
Aerostar #ad - Simple to install and a cost-effective step towards a healthier home environment. Designed to filter microscopic particles such as lint, dust mites, fine dust, pollen, viruses, pet dander, spores, smoke, and bacteria.

Manufactured in the usa by filtration Group, a world-leading manufacturer and supplier of filtration solutions making the world safer, healthier & more productive. 100% synthetic electrostatic media for high efficiency with low air flow resistance. Nominal size: 20x25x1; actual size: 19 3/4" x 24 3/4" x 3/4"; this merv 13 filter is comparable with MPR 1500-1900 & FPR 10 For best results, change your filters every 60 to 90 days but increase frequency to 30 days during peak summer and winter months.
BrandAerostar #ad
ManufacturerFiltration Group (Environmental Air) #ad
Height0.75 Inches
Length19.75 Inches
Width24.75 Inches
Part NumberP25S.012025-6
Model20x25x1 MERV 13

5. Filtrete

#ad

4-Pack exact dimensions 19.69 x 24.69 x 0.81, AC Furnace Air Filter, MPR 1000, Filtrete 20x25x1, Micro Allergen Defense

#ad
Filtrete #ad - Filters, and at least every 12 months for 4 in. Outperforms fiberglass, washable and non-electrostatic 3-month pleated 1 in. Thick air filters. 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. 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. Sign-up for a filter change reminder program that works for you! For residential use only. And 5 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.

For optimal performance of your heating & cooling system or hvac system, change your home air filter at least every 90 days for 1 in. Find your size: 1000 mpr available in 4in. 4in. Slim fit and 5in. When the lifespan is up, you’ll get a notification to change your filter. Create a change countdown in the filtrete smart app.
BrandFiltrete #ad
ManufacturerFiltrete #ad
Height19.69 Inches
Length24.69 Inches
Width0.81 Inches
Part Number9803
Model9803-4PK
WarrantyCall 1-800-494-3552 for warranty questions

6. Filtrete

#ad

AC Furnace Air Filter, Filtrete 20x25x4, Healthy Living Ultra Allergen Deep Pleat, MPR 1550 DP, 2-Pack actual 19.88 x 24.63 x 4.31

#ad
Filtrete #ad - Attracts and captures microscopic particles such as smoke, including lint, cough and sneeze debris, bacteria and viruses - and large particles, household dust and pollen. 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.

Slim fit and 5 in. 1550 mpr has a rating of MERV 12. 54% 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. Home air filters for your furnace, air conditioner or HVAC system.

Find your size: 1550 mpr available in 4 in. 4 in. Sign-up for a filter change reminder program that works for you! And 5in. Filters. A dirty filter will slow down air flow and make the system work harder to keep you warm or cool - wasting energy. Certified as asthma & allergy friendly As outlined in report ASCR: 1246-01. For optimal performance of your heating & cooling system or hvac system, change your home air filter at least every 90 days for 1in.
BrandFiltrete #ad
ManufacturerFiltrete #ad
Height19.88 Inches
Length24.63 Inches
Weight2.63 Pounds
Width4.31 Inches
Part NumberNDP03-4IN-2P-2
ModelNDP03-4IN-2P-2
WarrantyLimited Warranty

7. Aerostar

#ad

AC Furnace Air Filter, 6 Pack Actual Size: 19 1/2"x24 1/2"x3 3/4", Aerostar 20x25x4 MERV 8 Pleated Air Filter

#ad
Aerostar #ad - 100% synthetic electrostatic media for high efficiency with low air flow resistance. Nominal size: 20x25x4; actual size: 19 1/2"x24 1/2"x3 3/4"; this mERV 8 filter is comparable with MPR 600 & FPR 5. Designed to filter microscopic particles such as lint, dust mites, spores, and pollen. Manufactured in the usa by filtration Group, a world-leading manufacturer and supplier of filtration solutions making the world safer, healthier & more productive. Simple to install and a cost-effective step towards a healthier home environment. Replace 3"-5" filters every 3-6 months.
BrandAerostar #ad
ManufacturerFiltration Group (Environmental Air) #ad
Height3.75 Inches
Length19.5 Inches
Width24.5 Inches
Part Number20x25x4 MERV 8
Model20x25x4 MERV 8

8. Filtrete

#ad

Filtrete 20x25x1, Healthy Living Ultra Allergen, AC Furnace Air Filter, MPR 1500, 2-Pack exact dimensions 19.719 x 24.688 x 0.78

#ad
Filtrete #ad - Slim fit and 5 in. Electrostatic air filter with Microparticle Performance Rating 1500 Sign-up for a filter change reminder program that works for you! Designed with filtrete brand 3-in-1 technology from 3M to pull in and trap unwanted air particles while letting clean air flow through.

Thick air filters. The higher the mpr, the more microparticles--such as pollen, pet dander, smoke, bacteria and viruses--your filter will capture from the air passing through it. And 5 in. Certified as asthma & allergy friendly As outlined in report ASCR: 1246-01. 54% 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.

3 times better at small particle capture compared to non-electrostatic pleated filters for the capture of 03 to 1. 0 micron particles. A dirty filter will slow down air flow and make the system work harder to keep you warm or cool--wasting energy. Outperforms fiberglass, washable and non-electrostatic 3-month pleated 1 in. Filters.
BrandFiltrete #ad
ManufacturerFiltrete #ad
Height0.78 Inches
Length24.68 Inches
Weight1.45 Pounds
Width19.71 Inches
Part NumberUR03-2PK-6E
ModelUR03-2PK-1E
WarrantyThis 3M product will be free from defects in material and manufacture. If this 3M product is defective, your exclusive remedy shall be, at 3M's option, replacement of the 3M product or refund of the purchase price of the 3M product. This warranty gives you specific legal rights, and you may have other rights which may vary from state to state, or country to country. To obtain warranty service, contact 3M at the address listed on the product package.

9. Nordic Pure

#ad

Nordic Pure 20x25x4 MERV 12 Pleated AC Furnace Air Filters 2 Pack

#ad
Nordic Pure #ad - Lead/handling Time - 5. Hypoallergenic and pleated electrostatic filter material. Attracts indoor allergens, dust, pollen and other airborne contaminants. Proudly made in the USA. Nordic pure recommends changing 4" air filters every 3-6 months. Nominal size: 20 x 25 x 4, actual size: 19 1/2 x 24 1/2 x 3 5/8 19. 5 x 24. 5 x 3. 63.
BrandNordic Pure #ad
ManufacturerNordic Pure #ad
Height19.5 Inches
Length24.5 Inches
Weight3.52 Pounds
Width3.63 Inches
Part Number20x25x4M12-2
Model20x25x4 (3 5/8)

10. Filtrete

#ad

2-Pack exact dimensions 19.719 x 24.688 x 0.78, AC Furnace Air Filter, Filtrete 20x25x1, MPR 2800, Healthy Living Ultrafine Particle Reduction

#ad
Filtrete #ad - Sign-up for a filter change reminder program that works for you! 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.

2800 mpr has a rating of MERV 14. 81% 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. 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. Attracts and captures microscopic particles such as smoke, cough and sneeze debris, including lint, bacteria and viruses--and large particles, household dust and pollen.

Find your size: 2800 mpr available in 4 in. 4 in. 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. 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. Thick air filters.
BrandFiltrete #ad
Manufacturer3M CHIMD #ad
Height1 Inches
Length25 Inches
Weight2.2 Pounds
Width20 Inches
Part NumberUF03-2PK-6E
ModelUF03-2PK-6E
WarrantyFiltrete