Discount Water Filters and Air Filters at Discount Filter Store.com

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

Clear All
Compare

4 Item(s)

Grid  List 

Set Descending Direction
  • DPFL20X21X5 Tier1 Replacement Air Filter - 20X21X5 (2-Pack)
  • DPFL20X21X5M11 Tier1 Replacement Air Filter - 20X21X5 (2-Pack)
  • DPFL20X21X5M13 Tier1 Replacement Air Filter - 20X21X5 (2-Pack)

4 Item(s)

Grid  List 

Set Descending Direction
Scroll To Top