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

3M Filtrete Air Conditioner & Furnace Air Filters

Replace your old air filter with a Filtrete air/furnace filter from Discount Filter Store

Clean air filters can reduce pollen and allergens in the air while reducing the energy cost of your home's HVAC system. Save time and money by ordering the right filter at the right price, delivered to your door!  Choose from five different styles of 3M Filtrete air filters, in over 30 sizes, each available with four different MERV Ratings, 8, 11, 12, and 15.  No matter what you’re wanting to filter out of the air, whether it just lint dust, and pet hair or things including pollen, dust mites, smoke, and bacteria, Discount Filter Store has a 3M Filtrete air filter to meet your needs.

All Filtrete air filters are designed with the Filtrete™ brand 3-in-1 technology from 3M, that pulls in and traps unwanted particles, while letting the cleaner air flow through, helping you home stay fresher, cleaner, and healthier, longer.

Looking for another brand of air filters, Discount Filter Store’s line of Tier1 air filters, fits hundreds of the industry’s most popular air filter brands, including, Aprilaire, Carrier, Honeywell, Lennox, and more; all available at prices that won’t break your bank.

Shop our huge selection of Filtrete air filters today and enjoy a fresh, clean home.

1-Inch Air Filter Selection Guide

Filtrete Dust & Pollen
Filtrete Dust & Pollen Reduction Filter
Filtrete Micro Allergen
Filtrete Micro Allergen Filter
Filtrete Ultra Allergen
Filtrete Ultra Allergen Filter
Filtrete Ultimate Allergen
Filtrete Ultimate Allergen Filter
Filtrete Elite Allergen
Filtrete Elite Allergen Filter
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  • W25P American Plumber Whole House Sediment Filter Cartridge (2-Pack)
  • W5P American Plumber Whole House Sediment Filter Cartridge (2-Pack)
  • WPD-110 American Plumber Whole House Sediment Filter Cartridge (2-Pack)
  • WRC25HD American Plumber Whole House Heavy Duty Filter Cartridge
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  • AP1001 3M Aqua-Pure Whole House Filter Replacement Cartridge
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    3M Aqua-Pure AP110 Whole House Filter Replacement Cartridge

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  • 3M Aqua-Pure AP124 Whole House Water Filter Cartridge

    AP124 3M Aqua-Pure Whole House Filter Replacement Cartridge

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  • 3M Aqua-Pure AP420 Water Filter Replacement Cartridge
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    AP811 3M Aqua-Pure Whole House Filter Replacement Cartridge

    $36.99
    MSRP: $43.69
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    MSRP: $65.54
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  • CB1 OmniFilter Undersink Filter Replacement Cartridge

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    MSRP: $47.99
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  • CB3 OmniFilter Undersink Filter Replacement Cartridge
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    D-250A Culligan Undersink Filter Replacement Cartridge Set

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  • Culligan D-30A Level 2 Undersink Filter Replacement Cartridge
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  • P1-D Culligan Level 4 Whole House Filter Replacement Cartridge (2-Pack)
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  • RFC-BBS-D Culligan Level 4 Whole House Filter Replacement Cartridge
  • CFS110 Cuno Whole House Filter Replacement Cartridge

    CFS110 Cuno Whole House Filter Replacement Cartridge

    $14.99
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  • 4WH-HDGR-F01 Filtrete Replacement Filter Cartridge

    4WH-HDGR-F01 3M Filtrete Water Filter Cartridge

    $18.99
    MSRP: $19.54
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  • FXULC GE SmartWater Undersink Filter Replacement Cartridge

    FXULC GE SmartWater Undersink Filter Replacement Cartridge

    $39.99
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  • FXUSC GE SmartWater Whole House Filter Replacement
  • FXUTC GE SmartWater Undersink Filter Replacement Cartridge

    FXUTC GE SmartWater Undersink Filter Replacement Cartridge

    $23.69
    MSRP: $35.99
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  • FXUVC GE SmartWater Undersink Filter Replacement Cartridge

    FXUVC GE SmartWater Undersink Filter Replacement Cartridge

    $56.59
    MSRP: $80.99
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  • 22006 Hydrologic BigBoy Replacement Carbon Filter - Green
  • CB-25-1005 Hydronix Replacement Filter Cartridge

    CB-25-1005 Hydronix Replacement Filter Cartridge

    $10.49
    MSRP: $14.99
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  • CB-25-2010 Hydronix Replacement Filter Cartridge

    CB-25-2010 Hydronix Replacement Filter Cartridge

    $15.69
    MSRP: $23.99
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  • CB-45-2010 Hydronix Replacement Filter Cartridge

    CB-45-2010 Hydronix Replacement Filter Cartridge

    $48.99
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  • SDC-25-1005 Hydronix Whole House Replacement Sediment Filter Cartridge
  • SDC-25-1020 Hydronix Whole House Replacement Sediment Filter Cartridge
  • SDC-25-2005 Hydronix Whole House Replacement Sediment Filter Cartridge
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  • SDC-25-2020 Hydronix Whole House Replacement Sediment Filter Cartridge
  • SDC-45-1001 Hydronix Whole House Replacement Sediment Filter Cartridge
  • SDC-45-1005 Hydronix Whole House Replacement Sediment Filter Cartridge
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  • SDC-45-2050 Hydronix Whole House Replacement Sediment Filter Cartridge
  • MATRIKX-1-HD10 KX Technologies MatrikX Whole House Filter Replacement Cartridge
  • EPM-10 Pentek Undersink Filter Replacement Cartridge

    EPM-10 Pentek Undersink Filter Replacement Cartridge

    $9.99
    MSRP: $13.99
    Save 29%
  • FLOPLUS-10 Pentek Replacement Filter Cartridge

    FLOPLUS-10 Pentek Replacement Filter Cartridge

    $14.99
    MSRP: $21.26
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  • FLOPLUS-10BB Pentek Replacement Filter Cartridge

    FLOPLUS-10BB Pentek Replacement Filter Cartridge

    $44.99
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  • FLOPLUS-20 Pentek Replacement Filter Cartridge

    FLOPLUS-20 Pentek Replacement Filter Cartridge

    $30.99
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  • FLOPLUS-20BB Pentek Replacement Filter Cartridge

    FLOPLUS-20BB Pentek Replacement Filter Cartridge

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Items 1 to 48 of 314 total

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