A. O. Smith AO-WH-FILTER
#1 in TankFull review
A certified, maintenance light tank for a small or medium home on chlorinated city water.
Amazon $399$399
3.3/5
A backwashing carbon tank for owners who want a long life system with a long warranty and have a drain nearby.
Check price at Amazon$1,673.70
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- Self cleaning backwash valve keeps the media working for years
- Up to 10 years of service in a 2 to 3 bathroom home, per iSpring
- Ten year warranty when registered
Cons
- Needs a drain and an outlet for the backwash valve
- No published flow rating or gallon capacity
- Tested to NSF/ANSI 42 and 53, not certified
How it scores
The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its build. How we rank explains each one.
Specifications
| Model number | WF150K |
|---|---|
| Filtration | |
| Replacement filters or media | $1,673.70 |
| Stages | 1 |
| Tested to (not certified) | NSF/ANSI 42, 53 |
| Chloramine | No |
| PFAS | No |
| Build | |
| Ports | 1 in |
| Backwashing | Yes |
| UV stage | No |
| Warranty | 10 years |
Alternatives in this build
Aquasana Rhino WH-1000
#2 in TankFull review
For a household that wants to fit a filter and forget it for a decade on chlorinated city water.
Amazon $999$999
Aquasana Rhino Max Flow with UV
#4 in TankFull review
For a large house that needs high flow and wants UV added. Most city homes can skip the UV and pay less.
Amazon $2,246.99$2,246.99
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