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

Filter Performance Rating (FPR)

Filter Performance Rating is an air filter rating system developed by The Home Depot to takes the guesswork out of choosing from the brands sold in their stores. The rankings indicate whether an air filter's performance is considered good, better, best or premium.

Good: FPR 4-5

  • Traps household dust and lint, dust mites, pollen, pet dander

Better: FPR 6-7

  • Traps household dust and lint, dust mites, pollen, pet dander, bacteria, mold spores

Best: FPR 8-9

  • Traps household dust and lint, dust mites, pollen, pet dander, bacteria, mold spores, smoke, smog, microscopic allergens, plus particles that can carry viruses

Premium: FPR 10

  • Traps household dust and lint, dust mites, pollen, pet dander, bacteria, mold spores, smoke, smog, microscopic allergens, plus particles that can carry viruses, particles that can carry odors