★★★★★
Easy to install
demom1—October 28, 2025✓ Verified purchase
Easy to install. And taste really good. Read more
AO Smith Water Filter for Sink Faucet - Basic Direct Connect Under Sink Water Filter System - Carbon
$79.99
About this item
- 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.
$79.99
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Delivery — Thursday 9 Apr – 15 Apr · Order within 14h 52m
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Product details
| Material | carbon block |
|---|---|
| Item Weight | 2.5 Pounds |
| Product Benefits | Reduces up to 99% of 9 harmful contaminants including chlorine and lead while maintaining essential minerals and providing fast filtered water for households of 1-4 people. See more |
| Brand | AO Smith |
| Set Name | Basic |
Technical specifications
| material | carbon block |
|---|---|
| item_weight | 2.5 pounds |
| product_benefits | Reduces up to 99% of 9 harmful contaminants including chlorine and lead while maintaining essential minerals and providing fast filtered water for households of 1-4 people. |
| brand | AO Smith |
| set_name | Basic |
| upc | 811640030629 |
| unit_count | 1.0 Count |
| number_of_items | 1 |
| manufacturer | AO Smith |
| part_number | AO-MF |
| product_dimensions | 3 x 3 x 15.5 inches |
| item_model_number | AO-MF |
| style | Basic Filter System |
| installation_method | Under Sink |
| item_package_quantity | 1 |
| flow_rate | 1.4 Gallons Per Minute |
| special_features | Chlorine Reduction, WQA Certified |
| included_components | Filter |
| batteries_included | No |
| batteries_required | No |
| best_sellers_rank | #160,866 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #290 in Under-Sink & Countertop Filtration |
| date_first_available | January 28, 2021 |
From the brand
Customer reviews
4.460 ratings
Customers say
Customers find the water filter easy to install and appreciate its taste.
★★★★★
Great water filter.
Ruben Rivera Jr—February 16, 2026✓ Verified purchase
I've used this filter before, it certainly does the job, the water tastes great. Read more
★★★★★
Easy to install
Brenda Bird—October 30, 2025✓ Verified purchase
We use the filter in our kitchen to keep out small particles from well water. We love it Read more
★★★★☆
Better flow than Aquasana
Don K—December 4, 2023✓ Verified purchase
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.👍🏻 Read more
★★★★★
Filter
SD—July 25, 2025✓ Verified purchase
Have bought this before. Is very good and easy to install. Read more
★★★★★
Great filter for city water !
Julia—May 30, 2025✓ Verified purchase
Water is totally drinkable now!! Great filter , easy to install Read more
★☆☆☆☆
one small part fail equals useless filter system
craig rousseau—January 10, 2026✓ Verified purchase
put this filter aside until i we got to replacing the sink and counter (so we’ll out of return window)… frustratingly, the threading on the plastic connector piece quickly stripped and was unable to connect to the faucet supply. after receiving a replacement, the same issue. soft plastic threading stripped and makes the entire unit unusable. Read more
★★★★★
Great water filter!
Jaime D—May 13, 2025✓ Verified purchase
Great product. Water is clean and taste good! Read more
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