A.O. Smith Whole House Central Water Filter (AO-WH-FILTER) Carbon filter, checked against its listings
- Maker’s list price
- $350
- Five years
- $350
- Service flow
- 7 gpm
- Built for
- City or well water
- Connections
- 3/4 in. (included shut-off valve and nipple)
Product recordListings checked Oct. 4, 2026
What the listings say
NSF/ANSI 42 · NSF listing
Chlorine Reduction; Taste and Odor Reduction
Read the listing, checked Oct. 4, 2026
Certified for, and claimed
Certified, by a listing
Claimed by the maker only
- chlorine taste and odor (96.9%)
- chloramine
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 | $350 |
Five-year total$350
Per gallon0.1¢
Worth knowing
Certified to NSF/ANSI 42 for chlorine, taste and odor only, at 7 gpm and 600,000 gallons. The product page also says it reduces chloramine; that is not on the listing. The features give 6 years or 600,000 gallons, while the specification table says 60 months. The manual recommends a sediment pre-filter. The product page says city or well water. A.O. Smith shows a $349.99 MSRP, sells through Lowe's and lists no price for the replacement tank.
Install requirements
- Kind
- Carbon filter
- Rated media life
- 6 years or 600,000 gallons
- Needs a drain
- No
- Needs power
- Not stated