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Air Conditioner & Furnace Air Filters By Brand

Whether you’re looking for one air conditioner/ furnace filter to replace your old dirty one or to stock up on furnace air filters, Discount Filter Store can help, by providing you with more, for less.  We offer air conditioner filters from some of the industry’s top manufacturers including 3M Filtrete, Bryant, Aprilaire, Honeywell, and more.

Not sure which filter is right for your home?  Our helpful experts are also here to make sure you find the filter you need. Give us a call at 1-800-277-3458, and we’ll answer all your air filter questions.

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16 Item(s)

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  1. DPFI16X21X5 Tier1 Replacement Air Filter - 16X21X5 (2-Pack)

    Tier1 brand replacement for White-Rodgers FR1000-100 - 16 x 21 x 5 - MERV 8 (2-Pack)

    Fits White-Rodgers air cleaner models ACB1000, ACM1000 and 0121-018000 Learn More
    $54.87 Retail Price:  $65.40
  2. DPFI16X21X5DCM Tier1 Replacement Air Filter - 16X21X5 (2-Pack)

    Tier1 brand replacement for Comfort Plus - 16 x 21 x 5 - MERV 8 (2-Pack)

    Fits White-Rodgers air cleaner models ACB1000, ACM1000 and 0121-018000 Learn More
    $54.87 Retail Price:  $65.40
  3. DPFI16X21X5DEA Tier1 Replacement Air Filter - 16X21X5 (2-Pack)

    Tier1 brand replacement for Electro Air - 16 x 21 x 5 - MERV 8 (2-Pack)

    Fits White-Rodgers air cleaner models ACB1000, ACM1000 and 0121-018000 Learn More
    $54.87 Retail Price:  $65.40
  4. DPFI16X21X5DEM Tier1 Replacement Air Filter - 16X21X5 (2-Pack)

    Tier1 brand replacement for Emerson - 16 x 21 x 5 - MERV 8 (2-Pack)

    Fits White-Rodgers air cleaner models ACB1000, ACM1000 and 0121-018000 Learn More
    $54.87 Retail Price:  $65.40
  5. DPFI16X21X5M11 Tier1 Replacement Air Filter - 16X21X5 (2-Pack)

    Tier1 brand replacement for White-Rodgers FR1000-100 - 16 x 21 x 5 - MERV 11 (2-Pack)

    Fits White-Rodgers air cleaner models ACB1000, ACM1000 and 0121-018000 Learn More
    $60.47 Retail Price:  $71.84
  6. DPFI16X21X5M11DCM Tier1 Replacement Air Filter - 16X21X5 (2-Pack)

    Tier1 brand replacement for Comfort Plus - 16 x 21 x 5 - MERV 11 (2-Pack)

    Fits White-Rodgers air cleaner models ACB1000, ACM1000 and 0121-018000 Learn More
    $60.47 Retail Price:  $71.84
  7. DPFI16X21X5M11DEA Tier1 Replacement Air Filter - 16X21X5 (2-Pack)

    Tier1 brand replacement for Electro Air - 16 x 21 x 5 - MERV 11 (2-Pack)

    Fits White-Rodgers air cleaner models ACB1000, ACM1000 and 0121-018000 Learn More
    $60.47 Retail Price:  $71.84
  8. DPFI16X21X5M11DEM Tier1 Replacement Air Filter - 16X21X5 (2-Pack)

    Tier1 brand replacement for Emerson - 16 x 21 x 5 - MERV 11 (2-Pack)

    Fits White-Rodgers air cleaner models ACB1000, ACM1000 and 0121-018000 Learn More
    $60.47 Retail Price:  $71.84
  9. DPFI16X21X5M13 Tier1 Replacement Air Filter - 16X21X5 (2-Pack)

    Tier1 brand replacement for White-Rodgers FR1000-100 - 16 x 21 x 5 - MERV 13 (2-Pack)

    Fits White-Rodgers air cleaner models ACB1000, ACM1000 and 0121-018000 Learn More
    $70.55 Retail Price:  $83.43
  10. DPFI16X21X5M13DCM Tier1 Replacement Air Filter - 16X21X5 (2-Pack)

    Tier1 brand replacement for Comfort Plus - 16 x 21 x 5 - MERV 13 (2-Pack)

    Fits White-Rodgers air cleaner models ACB1000, ACM1000 and 0121-018000 Learn More
    $70.55 Retail Price:  $83.43
  11. DPFI16X21X5M13DEA Tier1 Replacement Air Filter - 16X21X5 (2-Pack)

    Tier1 brand replacement for Electro Air - 16 x 21 x 5 - MERV 13 (2-Pack)

    Fits White-Rodgers air cleaner models ACB1000, ACM1000 and 0121-018000 Learn More
    $70.55 Retail Price:  $83.43
  12. DPFI16X21X5M13DEM Tier1 Replacement Air Filter - 16X21X5 (2-Pack)

    Tier1 brand replacement for Emerson - 16 x 21 x 5 - MERV 13 (2-Pack)

    Fits White-Rodgers air cleaner models ACB1000, ACM1000 and 0121-018000 Learn More
    $70.55 Retail Price:  $83.43
  13. DPFI16X21X5OB Tier1 Replacement Air Filter - 16X21X5 (2-Pack)

    Tier1 brand replacement for White-Rodgers FR1000-100 - 16 x 21 x 5 - Carbon Filter Upgrade (2-Pack)

    Fits White-Rodgers air cleaner models ACB1000, ACM1000 and 0121-018000 Learn More
  14. DPFI16X21X5OBDCM Tier1 Replacement Air Filter - 16X21X5 (2-Pack)

    Tier1 brand replacement for Comfort Plus - 16 x 21 x 5 - Carbon Filter Upgrade (2-Pack)

    Fits White-Rodgers air cleaner models ACB1000, ACM1000 and 0121-018000 Learn More
  15. DPFI16X21X5OBDEA Tier1 Replacement Air Filter - 16X21X5 (2-Pack)

    Tier1 brand replacement for Electro Air - 16 x 21 x 5 - Carbon Filter Upgrade (2-Pack)

    Fits White-Rodgers air cleaner models ACB1000, ACM1000 and 0121-018000 Learn More
  16. DPFI16X21X5OBDEM Tier1 Replacement Air Filter - 16X21X5 (2-Pack)

    Tier1 brand replacement for Emerson - 16 x 21 x 5 - Carbon Filter Upgrade (2-Pack)

    Fits White-Rodgers air cleaner models ACB1000, ACM1000 and 0121-018000 Learn More

16 Item(s)

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