
DiscountFilters
Details: 10% off order... it may be a one use coupon.... not sure

Discount Filter Store
Details: $24 Off on FAP02-RS (16x10 rooms) Filtrete Ultra Clean Air Purifier.

FiltersFast
Details: Up to 20% Off Replacement filters for Cuisinart Coffeemakers equipped with the Charcoal Water Filtration System

Water Filters Fast
Details: Take $1 off any purchase

FridgeFilters.com
Details: $1 off any order

FiltersAmerica.Com
Details: Discount not specified.

AllFilters.com
Details: Get Up to $24 Off Aqua Fresh Water Filters

Air Filter Store
Details: Up to 48% Off Select Honeywell Air Filters & Purifiers

Best Filters
Details: $20 Off Blueair 200/300 Series Replacement GO SmokeStop Filter + Free Shipping

Ezvacuum
Details: $1 OFF

FiltersUSA.Com
Details: Received $3.00 off my order

All Kinds Of Filters
Details: 10% off at all kinds of filters.

Water Filter USA
Details: $47 Off Pelican Premium Whole House Filter Softener + Free Shipping

Factory Direct Filters
Details: 5% Off Everything

Nordicpure
Details: 6% Off MSRP Lightning Air SP Ceramic Plates plus Free Shipping

The Pure Air Store
Details: Up to 38% Off Select Clearance Items Plus Free Shipping on Orders Over $59

Air Filters by OxyClean
Details: Free Shipping on Orders of $99 or More on Selected Items

Filters Direct
Details: 10% off all of our 1" filters. Use promo code. Ends 12/31/2013.

HEPA Filter Sales
Details: $5 OFF

The Purchase Advantage
Details: 20% Off When You Buy 10 Cases of Calypso Blue Cartridges

Gutter Stuff
Details: Free Shipping on $190+

Reliant Energy
Details: Code for Febreze air filters