Top 10 Furnace Filters 20x25x4 – Furnace Filters

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1. Aerostar

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Actual Size: 19 1/2"x24 1/2"x3 3/4", 6-Pack, Made in the USA, Aerostar Clean House 20x25x4 MERV 8 Pleated Air Filter

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Aerostar #ad - Made in the usa - aerostar filters are manufactured in the USA by Filtration Group, a world-leading manufacturer and supplier of filtration solutions for residential, commercial and industrial applications. For best results, change your filters every 60 to 90 days during normal times of year but increase frequency to 30 days during peak summer and winter months when your unit is working the hardest.

Check your fit - 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. Improve indoor air quality - protect your family and loved ones with clean indoor air quality at home. Aerostar filters are a simple to install and cost-effective step towards a healthier home environment, free of airborne allergens and particles that can trigger various allergy and asthma symptoms.

High performing - 100% synthetic electrostatic media for high efficiency with low air flow resistance. Superior filtration efficiency - aerostar filters are made with electrostatically charged synthetic material that draws and captures allergens including lint, mold spores, pollen, dust mites, pet dander, and dust.
BrandAerostar #ad
ManufacturerFiltration Group (Environmental Air) #ad
Weight11.02 Pounds
Part Number20x25x4 MERV 8
Model20x25x4 MERV 8

2. FilterBuy

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Actual size 19 3/8" x 24 3/8" x 3 5/8", Pack of 4 Filters, FilterBuy 20x25x4 MERV 13 Pleated AC Furnace Air Filter, 20x25x4 – Platinum

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FilterBuy #ad - Also captures bacteria, viruses carrying particles, fine dust, mold spores and smoke. Nominal size 20x25x4, actual size: 19 3/8" x 24 3/8" x 3 5/8". Long-lasting: designed to last up to 3 months.

Made in the usa: manufactured by FilterBuy in the USA using 100% American made components. Check your size. Afb platinum merv 13, comparable with mpr 1500 to 1900 Ultimate Allergen Defense or Allergen Elite FPR 10 Suitable for residential and business or commercial use Industrial grade. 20x25x4 merv 13 pleated air filter for ac hvac or furnace pack of 4 filters.

Hospital grade merv 13 synthetic media: attracts and captures airborne particles or allergens less than one micron in size such as pollen, pet dander. High quality: filter frames are made of beverage board, which stays strong through humidity and temperatures up to 200° F. Synthetic media provides significantly higher particulate efficiency than standard cotton media.
BrandFilterBuy #ad
ManufacturerFilterBuy #ad
Part NumberAFB20x25x4M13pk4
ModelAFB20x25x4M13pk4

3. FilterBuy

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Pack of 4 Filters, 20x25x4 – Gold, FilterBuy 20x25x4 MERV 11 Pleated AC Furnace Air Filter, Actual size 19 3/8" x 24 3/8" x 3 5/8"

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FilterBuy #ad - Afb gold merv 11, comparable with mpr 1200 Allergen or Micro Particle MPR800 Long-lasting: designed to last up to 3 months. Nominal size 20x25x4, actual size: 19 3/8" x 24 3/8" x 3 5/8".

Made in the usa: manufactured by FilterBuy in the USA using 100% American made components. Check your size. Synthetic media provides significantly higher particulate efficiency than standard cotton media. High quality: filter frames are made of beverage board, which stays strong through humidity and temperatures up to 200° F. Suitable for residential and business or commercial use Industrial grade. 20x25x4 merv 11 pleated air filter for ac hvac or furnace pack of 4 Filters. Merv 11 synthetic media designed for allergen protection: Attracts and captures pet dander, dust mite debris, mold spores, dust, smoke, pollen, lint, and smog.
BrandFilterBuy #ad
ManufacturerFilterBuy #ad
Part NumberAFB20x25x4M11pk4
ModelAFB20x25x4M11pk4

4. Filtrete

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Clean Living Basic Dust, MPR 300, AC Furnace Air Filter, 6-Pack, Filtrete 20x25x1

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Filtrete #ad - Outperforms fiberglass, washable and non electrostatic 3 month pleated 1 inches air filters for your furnace, air conditioner, 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.

Packaging and filter media may vary for MPR 300 Exclusive filtrate brand 3 in 1 technology from 3M traps unwanted air particles, while letting cleaner air flow through. Filtrate 300 mpr micro particle Performance Rating equates to MERV 5. 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. For residential use only. Attracts and captures large particles such as lint, household dust, dust mite debris and mold spores.
BrandFiltrete #ad
ManufacturerFiltrete #ad
Height19.69 Inches
Length24.69 Inches
Weight1 Pounds
Width0.81 Inches
Part NumberMPR 300
ModelBD03-6PK-1E
WarrantyLimited Warranty

5. FilterBuy

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Pack of 2 Filters, 20x25x4 – Silver, Actual size 19 3/8" x 24 3/8" x 3 5/8", FilterBuy 20x25x4 MERV 8 Pleated AC Furnace Air Filter

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FilterBuy #ad - High quality: filter frames are made of beverage board, which stays strong through humidity and temperatures up to 200° F. Long-lasting: designed to last up to 3 months.

Synthetic media provides significantly higher particulate efficiency than standard cotton media. Afb silver merv 8, comparable with mPR 300 / 600 clean living and dust & pollen. Made in the usa: manufactured by FilterBuy in the USA using 100% American made components. Say hello to better indoor air quality! Check your size. Nominal size 20x25x4, actual size: 19 3/8" x 24 3/8" x 3 5/8". 20x25x4 merv 8 pleated air filter for ac hvac or furnace Pack of 2 Filters. Ideal for residential and commercial use. Traps 90% of airborne particles: say goodbye to dust, pollen, debris, lint, and pet dander.
BrandFilterBuy #ad
ManufacturerFilterBuy #ad
Part NumberAFB20x25x4M8pk2
ModelAFB20x25x4M8pk2

6. Nordic Pure

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Nordic Pure 20x25x4 3-5/8 Actual Depth MERV 12 Pleated AC Furnace Air Filters, Box of 2

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

7. FilterBuy

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20x25x4 – Silver, Pack of 6 Filters, Actual size 19 3/8" x 24 3/8" x 3 5/8", FilterBuy 20x25x4 MERV 8 Pleated AC Furnace Air Filter

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FilterBuy #ad - Nominal size 20x25x4, actual size: 19 3/8" x 24 3/8" x 3 5/8". 20x25x4 merv 8 pleated air filter for ac hvac or furnace Pack of 6 Filters. Say hello to better indoor air quality! .

Made in the usa: manufactured by FilterBuy in the USA using 100% American made components. Synthetic media provides significantly higher particulate efficiency than standard cotton media. Traps 90% of airborne particles: say goodbye to dust, pollen, lint, debris, and pet dander. Ideal for residential and commercial use. Afb silver merv 8, comparable with mPR 300 / 600 clean living and dust & pollen. Long-lasting: designed to last up to 3 months. High quality: filter frames are made of beverage board, which stays strong through humidity and temperatures up to 200° F. Check your size.
BrandFilterBuy #ad
ManufacturerFilterBuy #ad
Part NumberAFB20x25x4M8pk6
ModelAFB20x25x4M8pk6

8. BestAir

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20" x 25" x 4", For Honeywell Models, Removes Allergens & Contaminants, Pack of 3, BestAir PFHW2025-11CR AC Furnace Air Filter, Carbon Infused to Eliminate Odor, MERV 11, Fits 100%

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BestAir #ad - Package dimensions : 2025 inches H x 25. 25 inches L x 15. 25 inches W. Improves Indoor Air Quality. Helps Control Odors. Filters airborne particles that can trigger allergy and asthma attacks.
BrandBestAir #ad
ManufacturerRPS Products, Inc #ad
Height25 Inches
Length20 Inches
Weight9 Pounds
Width4 Inches
Part NumberPFHW2025-11CR
ModelPFHW2025-11CR

9. Filtrete

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AC Furnace Air Filter, MPR 1000 DP, 4-Pack, Filtrete 20x25x4, Micro Allergen Defense Deep Pleat

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Filtrete #ad - Attracts and captures particles such as lint, pet dander, dust, pollen, smoke and smog. Outperforms fiberglass, washable and non-electrostatic 3-month pleated 1 in. Thick air filters. 1000 mpr has a rating of MERV 11. Filters. Designed with exclusive filtrete brand 3-in-1 technology from 3M to trap unwanted air particles while letting cleaner air flow through.

When the lifespan is up, you’ll get a notification to change your filter. Sign-up for a filter change reminder program that works for you! For residential use only. Find your size: 1000 mpr available in 4in. 4in. Slim fit and 5in. Filters, and at least every 12 months for 4 in. 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.

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. 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 1 in. A dirty filter will slow down air flow and make the system work harder to keep you warm or cool--wasting energy.
BrandFiltrete #ad
ManufacturerFiltrete #ad
Height19.88 Inches
Length24.63 Inches
Weight2.35 Pounds
Width4.31 Inches
Part NumberNADP03-4IN-4
ModelNADP03-4IN-4

10. FilterBuy

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AFB Silver. Replaces Honeywell 203720, FilterBuy 20x25x5 Honeywell FC100A1037 Compatible Pleated AC Furnace Air Filters MERV 8, FC200E1037, Carrier FILXXCAR-0020. 4 Pack., FC100A1037, FC35A1027

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FilterBuy #ad - Merv 8 afb silver. Payne macpAK20 Filterbuy 20x25x5 merv 8 whole house air filter replacement pack of 4 filters. Filter frames are made of beverage board, which stays strong through humidity and temperatures up to 200° F. Designed to replace honeywell air cleaner f25, filter #203720 Lennox x8790, x5426, bmac-20c, x6673, filcccar0020, filcccar0020, x7751, filxxcar0120.

Manufactured by filterBuy in the USA using 100% American made components. Ideal for residential and commercial use. Synthetic media provides significantly higher particulate efficiency than standard cotton media. Honeywell f35 & f35r filter # fc35a1027, honeywell f100 and f150 filter # FC100A1037, and Honeywell F200 filter #FC200E1037.

Day and night macpak20 Say hello to better indoor air quality! Designed to last up to 6 months. Say goodbye to dust, debris, pollen, lint, and pet dander. Carrier carf8250602, x0586, expxxlmc0020, hcf20-10, filxxcar0020, carl86469, filxxcar0020, hcc20-28, HCF20-16. Actual size 20 x 24 3/4 x 4 3/8. Also replaces bryant filbbcar0020, x6661, expxxfil0020, filcccar0020, carfc100a1037, expxxunv0020, filxxcar0120.
BrandFilterBuy #ad
ManufacturerFilterBuy #ad
Part NumberHRF20x25x5M8=CARpk4
ModelHRF20x25x5M8=CARpk4