Air Filters | HVAC, Furnace & AC Filter Finder

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Find Your Exact Filter Size

Enter your current filter size or model number:

Try: 20x20x1, X6672, or measure your filter

You can find the part number or size on the side of your current filter.

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Choose the Right MERV Rating

MERV 8

Standard Protection

  • Dust, pollen, dust mites
  • Pet dander
  • Most economical option
Shop MERV 8 →

MERV 11

Enhanced Protection

  • Everything MERV 8 catches
  • Mold spores, smoke
  • Best for allergies
Shop MERV 11 →

MERV 13

Maximum Protection

  • Bacteria, viruses
  • Smoke, smog
  • Hospital-grade filtration
Shop MERV 13 →

Not sure? Read our MERV comparison guide →

Need Help Finding Your Filter?

Our filter experts are here to help you find the perfect fit

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✉️ Email or Chat:

info@atomicfilters.com

24/7 Support

Find the perfect air filter for your home with our easy-to-use filter finder tool. Whether you need Carrier filters, Lennox filters, Goodman filters, Trane filters, Honeywell filters, or Aprilaire filters, we have the exact size and MERV rating you need. Our filters are made in the USA and ship within 24 hours. 

Not sure about your filter size? Use our filter finder by entering your current filter dimensions or model number. We carry all standard sizes including 20x20x1, 16x25x1, 20x25x1, 16x20x1, and whole house filters in 4-inch and 5-inch depths. Each filter lists both nominal and actual dimensions to ensure a perfect fit.

Choose from MERV 8, MERV 11, or MERV 13 ratings depending on your air quality needs. MERV 8 filters provide standard protection, MERV 11 offers enhanced allergy protection, and MERV 13 delivers hospital-grade filtration. All our furnace filters, AC filters, and HVAC filters come with a 30-day satisfaction guarantee.