Live Chat
Filters Fast Logo Header
bbb A+ site secured
Free Shipping on orders over $75 | FREE 365-DAY RETURNS

Product Availability

Please provide your e-mail address below to receive a notification when this product becomes available:


Thanks! We'll send you a notification when this product is available!

OmniFilter GAC1 Undersink Carbon Water Filter


Retail: $18.99 /ea
You Save: 34%
Buy 1 - 23 for $15.95 ea.
Buy 24+ for $12.50 ea.
As low as
Retail: $18.99
You Save: 16%

in stock
Ready to Ship!
Sign up for the Home Filter Club during checkout.
You choose how often you want your filter, and we take care of the rest.
Are you a purchasing agent? Purchasing for a business?
Contact [email protected] to gain access to case quantity discounts, account management and terms!
Product Information

The OmniFilter GAC1 Undersink Carbon Water Filter (Series C) is a replacement undersink water filter for the OmniFilter SFM2 and other OmniFilter water filter systems. This OmniFilter water filter has a 20 micron rating and replaces model numbers GAC1-SS and GAC1-DS. This powerful water filter reduces sediment and rust particles, as well as 97.5% of chlorine taste and odor.

Filter Specifications:

  • Micron Rating: 20
  • Flow Rate: 1 GPM
  • Filter Life: 2,000 or 12 months
  • Dimensions: 9 3/4"x2" (10" water filter)
  • Granular activated carbon (GAC) cartridge
  • Reduces sediment, rust particles, and chlorine

This carbon filter was previously known as model number GAC1-SS6-01 and/or GAC1-SS6-05 and is now known by model number GAC1-SS4-05.

The OmniFilter GAC1-SS can be used in place of the Omnifilter CB3 Series A and is the correct replacement water filter for the following filtration systems:


  • SFM2
  • OB3
  • UC2
  • U400
  • U500
  • U600
  • U700
  • OT2
  • Omni Super
  • Omni Deluxe
  • Omni Total 2
  • Omni Total Plus


Customer Reviews:

Total Reviews: 4 | Average Rating: 5.0 / 5.0

Great quality- cant send photos installed them same day they came

Collected by

I have a problem swallowing regular tap water. It causes me to choke. I can drink an entire glass of water with your filter and not have the pain or choking. The only problem I've been having is being able to find them in the stores in our area. We used to be able to purchase them at Walmart. Thank you for such a wonderful product that works.

Collected by

These are fantastic. We have drops that we put into a glass of water that tells us how much chlorine is in the water. We tested our water and it was yellow with chlorine. With the new filter. the water is crystal clear. We have been useing these filters for a few years and won't even consider another brand.

Collected by

iuse one on my icemaker in the refrigerator door . i am very satisfied with the filter, and your price and service

Collected by