Discount Water Filters and Air Filters at Discount Filter

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!
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  • You’re guaranteed to find expert help!

Learn more about our No Worries Guarantee

Water Filters & Air Filters Brands

Whether you’re looking to replace your inline water filter or trying to find the best air purifiers, we can help you by providing quality filters for less. Discount Filter Store offers the top filter brands, such as PUR, Honeywell, and ZeroWater to help make sure that you have worry-free water. 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 your filter questions from reverse osmosis water filtration systems to air humidifiers, to get you to the product you need.

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  • TIER1-DPFI16X20X4M11


    MSRP: $42.87
    Save 18%
  • TIER1-DPFI16X21X5M11


    MSRP: $71.84
    Save 16%
  • TIER1-DPFI16X25X4M11


    MSRP: $48.66
    Save 17%
  • TIER1-DPFI16X26X5M11


    MSRP: $64.08
    Save 16%
  • TIER1-DPFI20X20X4M11


    MSRP: $46.08
    Save 17%
  • DPFI20X21X5M11 Tier1 Replacement Air Filter - 20X21X5 (2-Pack)
  • TIER1-DPFI20X25X4M11


    MSRP: $44.79
    Save 6%
  • TIER1-DPFI20X25X5M11


    MSRP: $66.06
    Save 16%
  • TIER1-DPFI20X26X5M11


    MSRP: $66.65
    Save 16%

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