★★★★★
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 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 |
From the brand
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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