Top 7 Best 4×4 air filter (2022)

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

  • OUTPERFORMS FIBERGLASS, WASHABLE AND NON-ELECTROSTATIC 3-month pleated 1 in. home air filters for your furnace, air conditioner or HVAC system
  • 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, bacteria and viruses – and large particles, including lint, household dust and pollen
  • 1550 MPR has a rating of MERV 12
  • 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
  • 54% SMALL PARTICLE CAPTURE, like bacteria and particles that carry viruses ( % captured is based on ASHRAE 52.2 testing for 0.3 to 1 micron particles from the air passing through the filter, which relates to HVAC industry standard efficiency testing)
  • CERTIFIED as asthma & allergy friendly (As outlined in report ASCR: 1246-01)
  • FIND YOUR SIZE: 1550 MPR available in 4 in. , 4 in. slim fit and 5 in. thick air filters
  • FOR OPTIMAL PERFORMANCE of your heating & cooling system or HVAC system, change your home air filter at least every 90 days for 1in. filters, and at least every 12 months for 4in. 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. Sign-up for a filter change reminder program that works for you!

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

  • 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)
  • Attracts indoor allergens, dust, pollen and other airborne contaminants.
  • Hypoallergenic and pleated electrostatic filter material. Lead/Handling Time – 5
  • Nordic Pure recommends changing 4″ air filters every 3-6 months
  • Proudly Made in the USA

3. Honeywell Home MicroDefense AC Furnace Air Filter 16 x 25 x 4 MERV 8 (1 pk)

  • A HEALTHIER HOUSEHOLD – Breathe easy in your home with a Honeywell Home 4-Inch High Efficiency Air Cleaner Filter that helps keep hazardous airborne particles out and fresh air flowing in
  • MERV 8 RATING – Get exceptional protection against dust, viruses, bacteria, fungus, pollen, and spores. and 20x more effective than typical 1-inch fiberglass filters
  • RECOMMENDED USE – Recommended for homes with pets, people with allergies, homes with smokers, or anyone wanting cleaner air
  • LONG LASTING FILTRATION – Lasts up to 12 months without losing quality over time
  • EASY INSTALLATION – Honeywell Home’s easy-to-install air filters make changing out your air filtration unit quick, painless, and mess-free
  • COMPATIBLE AND CONVENIENT – Compatible with all Honeywell products, April ire and Space -Gard models 2200 and 2251, and Trion Air Bear 20 x 24 air cleaners
  • DIMENSIONS – Nominal size) 16 x 25 x 4 inches. Actual size) 15. 838 x 24. 875 x 4. 375 inches

4. Honeywell Home 4-inch Ultra Efficiency Air Cleaner Filter, MERV 12 Rating, (CF200A1008),16 x 25 x 4 3/8

  • A HEALTHIER HOUSEHOLD – Breathe easy in your home with a Honeywell Home 4-Inch Ultra Efficiency Air Cleaner Filter that helps keep hazardous airborne particles out and fresh air flowing in
  • MERV 12 RATING – Get exceptional protection against dust, viruses, bacteria, fungus, pollen, and spores. 60x more effective than typical 1-inch fiberglass filters
  • RECOMMENDED USE – Recommended for homes with pets, people with allergies, homes with smokers, or anyone wanting cleaner air
  • LONG LASTING FILTRATION – Lasts up to 12 months without losing quality over time
  • EASY INSTALLATION – Honeywell Home’s easy-to-install air filters make changing out your air filtration unit quick, painless, and mess-free
  • COMPATIBLE AND CONVENIENT – Compatible with April ire and Space -Gard models 2200 and 2252, Skuttle DB-25-20, and Trion Air Bear 20 x 25 inch air cleaners
  • DIMENSIONS – Nominal size) 16 x 25 x 4 inches / Actual Size) 15. 838 x 24. 875 x 4. 375 inches

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

  • 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
  • Simple to install and a cost-effective step towards a healthier home environment. Replace 3″-5″ filters every 3-6 months.
  • 100% synthetic electrostatic media for high efficiency with low air flow resistance
  • Manufactured in the USA by Filtration Group, a world-leading manufacturer and supplier of filtration solutions making the world safer, healthier & more productive

6. Nordic Pure 16x25x4 MERV 12 Pleated AC Furnace Air Filters 2 Pack

  • Actual Size: 15 1/2 x 24 1/2 x 3 5/8 (15. 5 x 24. 5 x 3. 63)
  • Attracts indoor allergens, dust, pollen and other airborne contaminants.
  • Hypoallergenic and pleated electrostatic filter material. Antimicrobial
  • Nordic Pure recommends changing 4″ air filters every 3-6 months
  • Proudly Made in the USA

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

  • Outperforms fiberglass, washable and non-electrostatic 3-month pleated 1″ home air filters for your furnace, air conditioner, or HVAC system
  • Exclusive Filtrete Brand 3-in-1 technology from 3M traps unwanted air particles, letting cleaner air flow through
  • Filtrete 1000 MPR (Microparticle Performance Rating) equates to MERV 11
  • 1000 and 1200 MPR also available in 4”, 4” slim fit and 5” air filters.Material: Synthetic
  • 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
  • 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
  • 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!

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