★★★★★
Works!
Theresa sawyer—October 31, 2025✓ Verified purchase
Works well! I have bough this several times and am truly disgusted by what it filters out of my water. Read more
AO Smith
AO Smith 4 5x10 25 Micron Carbon Sediment Water Filter Replacement Cartridge - For Whole House Filtration Systems
$37.99
About this item
- Filter for use with: Whole House Filter System with Timer (AO-WH-PREL). Use only certified, genuine A. O. Smith filters for continued contaminant removal and system performance.
- Longer lasting appliances - whole house filter system designed to reduce sediment from every tap.
- 25 micron filtration - reduces sediment smaller than the human eye can see.
- Replacements made easy - no plumber necessary. Replace filter every 6 months. Large capacity (4.5") filter is perfect for household sizes 4 or more people.
- Includes one replacement filter.
$37.99
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Product details
| Material | Carbon |
|---|---|
| Product Dimensions | 4.5"D x 10"W x 25"H |
| Item Weight | 2.01 Pounds |
| External Testing Certification | NSF |
| Product Benefits | Reduces sediment, extends appliance life, suitable for households with 4+ people, reduces turbidity |
Technical specifications
| material | Carbon |
|---|---|
| product_dimensions | 4.5"D x 10"W x 25"H |
| item_weight | 2.01 pounds |
| external_testing_certification | NSF |
| product_benefits | Reduces sediment, extends appliance life, suitable for households with 4+ people, reduces turbidity |
| brand | AO Smith |
| set_name | Whole House Filter |
| unit_count | 1.0 Count |
| number_of_items | 1 |
| manufacturer | AO Smith |
| part_number | Replacement Cartridge |
| item_model_number | Replacement Cartridge |
| size | 1 Count (Pack of 1) |
| item_package_quantity | 1 |
| measurement_system | English/Standard |
| batteries_included | No |
| batteries_required | No |
| best_sellers_rank | #26,975 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #204 in Replacement Under-Sink Water Filters |
| date_first_available | April 24, 2019 |
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Customer reviews
4.8378 ratings
Customers say
Customers find the water filter works well, with one mentioning it effectively filters well water and another noting it clears water to almost sparkling.
★★★★★
Great Filter
Kindle Customer—April 1, 2025✓ Verified purchase
This keeps stuff in the water from coming into my house. Read more
★★★★★
QUALITY FILTER
BobCooks4U—February 4, 2025✓ Verified purchase
I always use this product in my whole house filter system and change it faithfully every 4 months to prevent any sediment from the town water getting into my water softener. Believe me, it makes a big difference. Read more
★★★★★
Clears well water supply for months !
Deborah Crosby—July 28, 2025✓ Verified purchase
Easy to install. Clears water to almost sparkling. Replace whole house filter every 2-3 months. Have used for years and never disappointed ! Read more
★★★★☆
It’s alright!
Taylor Carroll—January 7, 2026✓ Verified purchase
I don’t know if it was our water system or these filters but I feel like they got way dirtier than they should have, either way they did their job! Read more
★★★★★
25 micron A.O. Smith filter
Thomas P.—December 14, 2025✓ Verified purchase
It works I filter the water coming in the house. I filter my drinking water out of my refrigerator. The last one was visually brown i assume iron oxide so i replaced it. So far so good it's a 25 micron so a ok. Read more
★★★★★
Recommended filters
Nana—August 5, 2025✓ Verified purchase
Perfect fit for our water filtration system. We subscribe so we save money and receive them on a regular replacement basis. Read more
★★★★★
It worked
Jim—December 17, 2025✓ Verified purchase
Fit exact Read more
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