A.O. Smith Whole House Sediment Filter, Valve-in-Head (AO-WH-PREV) Sediment filter, checked against its listings
- Maker’s list price
- $55
- Five years
- $131
- Service flow
- 6 gpm
- Built for
- City water
- Connections
- 3/4 in. NPT
Listings checked Oct. 4, 2026
What the listings say
NSF/ANSI 42 · NSF listing
Nominal Particulate Reduction, Class V
Read the listing, checked Oct. 4, 2026
Certified for, and claimed
Certified, by a listing
- Nominal Particulate Reduction, Class V
The listing’s own wording. None of these is a claim for one of the contaminants TapBuff tracks.
Claimed by the maker only
- sediment down to 5 microns
- rust, soil and silt
What it costs over five years
Household of 3, 240 gallons a day through the whole house. Installation not included.
| Item | Replaced | Count | Amount |
|---|---|---|---|
| System, with first media | — | 1 | $55 |
| Sediment filter, 2-pack (AO-WH-PREV-R2) | Every 12 monthsmonth rating | 4 | $76 |
Five-year total$131
Per gallon0.0¢
Worth knowing
Certified to NSF/ANSI 42 for Class V particulates, which the data sheet gives as 30 to 50 micron particles; the 5-micron figure is the maker's own. No chlorine claim. NSF and the manual's data sheet rate it at 6 gpm; the product page specification says 4 gpm. The product page says city or well water, but the data sheet says for use with municipally treated water only, so TapBuff lists it for city water. Replacement filters come in 2-packs at $18.99 and each lasts 6 months, so one pack is recorded as 12 months.
Install requirements
- Kind
- Sediment filter
- Rated media life
- 6 months per filter
- Needs a drain
- Not stated
- Needs power
- Not stated
Where to go next
Your household’s cost
The five-year cost at your own household size and daily use.
Run it for your household