Call Toll-Free: 1-800-277-3458

My Cart:

0 item(s)

When we protect your filter purchase with our No Worries Guarantee, we mean it!

No Worries...
  • Your filters are guaranteed to be the right fit!
  • Our products are price match guaranteed!
  • Our customer service team is guaranteed to answer your call!
  • You’re guaranteed to find expert help!

Learn more about our No Worries Guarantee

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.

Search by filter size

16 Item(s)

Grid  List 

Set Descending Direction
  1. 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
  2. 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
  3. 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
  4. 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
  5. DPFI16X26X5DEM Tier1 Replacement Air Filter - 16X26X5 (2-Pack)

    Tier1 brand replacement for Emerson - 16 x 26 x 5 - MERV 8 (2-Pack)

    Fits White-Rodgers air cleaner models ACB1400 and ACM1400 Learn More
    $52.64 Retail Price:  $62.84
  6. DPFI16X26X5M11DEM Tier1 Replacement Air Filter - 16X26X5 (2-Pack)

    Tier1 brand replacement for Emerson - 16 x 26 x 5 - MERV 11 (2-Pack)

    Fits White-Rodgers air cleaner models ACB1400 and ACM1400 Learn More
    $53.72 Retail Price:  $64.08
  7. DPFI16X26X5M13DEM Tier1 Replacement Air Filter - 16X26X5 (2-Pack)

    Tier1 brand replacement for Emerson - 16 x 26 x 5 - MERV 13 (2-Pack)

    Fits White-Rodgers air cleaner models ACB1400 and ACM1400 Learn More
    $64.92 Retail Price:  $76.96
  8. DPFI16X26X5OBDEM Tier1 Replacement Air Filter - 16X26X5 (2-Pack)

    Tier1 brand replacement for Emerson - 16 x 26 x 5 - Carbon Filter Upgrade (2-Pack)

    Fits White-Rodgers air cleaner models ACB1400 and ACM1400 Learn More
  9. DPFI20X21X5DEM Tier1 Replacement Air Filter - 20X21X5 (2-Pack)

    Tier1 brand replacement for Emerson - 20 x 21 x 5 - MERV 8 (2-Pack)

    Fits White-Rodgers air cleaner models ACB1600, ACM1600 and 0121-018200 Learn More
    $62.72 Retail Price:  $74.43
  10. DPFI20X21X5M11DEM Tier1 Replacement Air Filter - 20X21X5 (2-Pack)

    Tier1 brand replacement for Emerson - 20 x 21 x 5 - MERV 11 (2-Pack)

    Fits White-Rodgers air cleaner models ACB1600, ACM1600 and 0121-018200 Learn More
    $66.08 Retail Price:  $78.29
  11. DPFI20X21X5M13DEM Tier1 Replacement Air Filter - 20X21X5 (2-Pack)

    Tier1 brand replacement for Emerson - 20 x 21 x 5 - MERV 13 (2-Pack)

    Fits White-Rodgers air cleaner models ACB1600, ACM1600 and 0121-018200 Learn More
    $75.04 Retail Price:  $88.60
  12. DPFI20X21X5OBDEM Tier1 Replacement Air Filter - 20X21X5 (2-Pack)

    Tier1 brand replacement for Emerson - 20 x 21 x 5 - Carbon Filter Upgrade (2-Pack)

    Fits White-Rodgers air cleaner models ACB1600, ACM1600 and 0121-018200 Learn More
  13. DPFI20X26X5DEM Tier1 Replacement Air Filter - 20X26X5 (2-Pack)

    Tier1 brand replacement for Emerson - 20 x 26 x 5 - MERV 8 (2-Pack)

    Fits White-Rodgers air cleaner models ACB2000 and ACM2000 Learn More
    $51.48 Retail Price:  $61.50
  14. DPFI20X26X5M11DEM Tier1 Replacement Air Filter - 20X26X5 (2-Pack)

    Tier1 brand replacement for Emerson - 20 x 26 x 5 - MERV 11 (2-Pack)

    Fits White-Rodgers air cleaner models ACB2000 and ACM2000 Learn More
    $55.96 Retail Price:  $66.65
  15. DPFI20X26X5M13DEM Tier1 Replacement Air Filter - 20X26X5 (2-Pack)

    Tier1 brand replacement for Emerson - 20 x 26 x 5 - MERV 13 (2-Pack)

    Fits White-Rodgers air cleaner models ACB2000 and ACM2000 Learn More
    $64.92 Retail Price:  $76.96
  16. DPFI20X26X5OBDEM Tier1 Replacement Air Filter - 20X26X5 (2-Pack)

    Tier1 brand replacement for Emerson - 20 x 26 x 5 - Carbon Filter Upgrade (2-Pack)

    Fits White-Rodgers air cleaner models ACB2000 and ACM2000 Learn More

16 Item(s)

Grid  List 

Set Descending Direction
Scroll To Top