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AO Smith

AO Smith Under Sink Water Filter System - Basic Direct Connect Main Faucet Clean Water Filtration - Carbon Block Filter Reduces Up to 99% of 9 Harmful Contaminants - AO-MF

    • Based on 24 reviews
Condition: New
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$79.98 Why this price?
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Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, Nov 22
Order within 17 hours and 29 minutes
Available payment plans shown during checkout

Features

  • Clean Water Straight From Your Faucet - Connects directly to your kitchen sink cold water line without the need for an additional faucet. Only takes a few minutes. Includes system, one carbon block filter, and all parts necessary for installation. No plumber required. Measure your space to ensure unit fits under the sink (3 x 3 x 15.5 inches).
  • Purifies Water & Reduces 99% of 9 Harmful Contaminants - Basic filtration while leaving in all essential minerals. Reduces chlorine, lead, atrazine, lindane and turbidity. System will not reduce TDS.
  • Full System Certified To NSF/ANSI Standards 42 and 53 - Product is independently tested by IAPMO & certified to NSF performance standards, ensuring the structural integrity & quality of your entire system, not just the filtration media.
  • Long Lasting & Cost Efficient - No water is wasted and no harmful contaminants are added to your water during filtration. Filter lasts for 1,389 gallons or 6 months.
  • Fast, Filtered Water - System filters water at 1.4 gallons per minute. Perfect for households of 1-4 people.

Brand: AO Smith


Special Feature: WQA Certified, Chlorine Reduction


Product Dimensions: 3"L x 3"W x 15.5"H


Package Information: Cartridge


Installation Type: Under Sink


Item Weight: 2.5 Pounds


Model Name: AO MF


Maximum Flow Rate: 1.4 Gallons Per Minute


UPC:


Manufacturer: AO Smith


Brand: ‎AO Smith


Special Feature: ‎WQA Certified, Chlorine Reduction


Product Dimensions: ‎3"L x 3"W x 15.5"H


Package Information: ‎Cartridge


Installation Type: ‎Under Sink


Item Weight: ‎2.5 Pounds


Model Name: ‎AO MF


Maximum Flow Rate: ‎1.4 Gallons Per Minute


UPC: ‎811640030629


Manufacturer: ‎AO Smith


Part Number: ‎AO-MF


Item Weight: ‎2.5 pounds


Item model number: ‎AO-MF


Style: ‎Basic Filter System


Item Package Quantity: ‎1


Special Features: ‎WQA Certified, Chlorine Reduction


Batteries Included?: ‎No


Batteries Required?: ‎No


Date First Available: January 28, 2021


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Nov 22

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
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  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

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Top Amazon Reviews

    • Water filter
Review Image by Diane Diane
It was east to install!!! Works great!!
Reviewed in the United States on August 30, 2024 by Diane Diane
    • Fits and available
I bought my system from Lowes several years ago and they no longer carry the cartridges. They now only carry the next step up model which the cartridges aren't compatible (I tried). Took seconds to replace and works as it should.
Reviewed in the United States on September 22, 2022 by Steve
    • Better flow than Aquasana
Bought this filter accidentally when trying to get a replacement for our Aquasana same design filter system. Turns out this filter does not fit the Aquasana head (three tabs are smaller and more compact). Good news is this filter came with the correct head and all new connectors. I was able to trim the current Aquasana piping to just slide into the compression holes in this ao smith head and no leaks. Better news, this filter flows AT LEAST 3x stronger than our Aquasana did. Not sure if “basic filtration” is the same level of cleanliness but we’re happy to be able to fill a glass of water in under two minutes so we’re okay with it. Ps I think Aquasana stopped making this filter style so this is your new choice moving forward. It works fine and no clouding or taste issues.👍🏻 ... show more
Reviewed in the United States on December 4, 2023 by Don K
    • Don't last, replacement filter reorder difficult.
Supposed to last 6 months. Replaced it several times in less than that. They send the entire kit, if in stock. Also loses pressure short time, matter of weeks. Had water tested before & was not bad. Tested after & not much change. New faucet & screens are clear.
Reviewed in the United States on April 2, 2022 by Cathy
    • Great filter, slow flow.
Review Image by NC283249 NC283249
I compared all the local box store options and the highly rated Amazon reviews before getting this guy. Ao smith allegedly bought aquasense around 2014 so they sell this branded version of the aq-5200. The plastic fittings work fine. The trick is to spin threaded parts backwards until the threads line up. Then go slow. The only way the install could have been easier is if the filter wasn’t so large. The hoses were pre-cut, they push into the fittings easily and nothing leaked. The filtered water is noticeably softer (that slimy feeling when soap doesn’t rinse fully away). Water taste and feel is greatly improved in my case. Only con is the filtered water volume. Some people claim the water volume is sufficient to run off the main faucet. That is not my experience. The instructions claim 1.5gpm but I suspect my water is much harder than the water they used to test the flow. I read that low volume could be caused by over tightening so I ran the water while spinning the filter trying to find the sweet spot. I ordered a dedicated faucet to fix the flow issue. ... show more
Reviewed in the United States on May 31, 2021 by NC283249 NC283249

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