A. O. Smith AO-US-200 2-Stage Under Sink vs Aquasana Claryum 2-Stage
The A. O. Smith AO-US-200 2-Stage Under Sink and Aquasana Claryum 2-Stage are certified for the same contaminants we track. Replacement filters and water for 2 people cost about $168 a year on the A. O. Smith AO-US-200 2-Stage Under Sink and $148 on the Aquasana Claryum 2-Stage; they cost $140 and $250 to buy.
| A. O. Smith AO-US-200 2-Stage Under Sink | Aquasana Claryum 2-Stage | |
|---|---|---|
| Type | Under-sink filter | Under-sink filter |
| Price | $140 | $250 |
| Filters + water a year (2 people) | $168 | $148 |
| Filter cost per gallon (rated life) | 17¢ | 15¢ |
| Gallons per day | — | — |
| Pure to drain | — | — |
| Installation | diy | diy |
| PFAS | Certified | Certified |
| Lead | Certified | Certified |
| Chlorine | Certified | Certified |
| Chloramine | Certified | Certified |
| Mercury | Certified | Certified |
| Microplastics | Certified | Certified |
| Cysts | Certified | Certified |
| VOCs | Certified | Certified |