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Water Filtration
AO Smith AO-US-200 Under Sink Water Filter
AO Smith
Best Price
$200
amazon
Our Take
A.O. Smith's under-sink filter is the value-tier alternative to RO, single-stage carbon block + GAC. Removes chlorine, lead, asbestos, mercury, but NOT fluoride (you need RO for fluoride). Easier install than RO, no water waste, ~$50/year filter replacement. The right pick if your water concerns are urban-supply contaminants but not fluoride.
Pros
- Easier install than RO, no electricity, no drain line
- No wasted water (vs RO's 3:1 waste ratio)
- Removes lead, mercury, asbestos, chlorine
Cons
- Doesn't remove fluoride (RO is required for that)
- Lower contaminant scope than full RO systems
Specifications
type
Under-sink
stages
3-Stage
capacity
200,000 gallons
Price Comparison
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$200View
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