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Versus · Compact Under-Sink Water Filters
A.O. SmithVSAquasana AQ-MF-1
✓
A.O. Smith and Aquasana AQ-MF-1 are remarkably close overall. In this category, the right choice depends on your specific priorities.
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Updated Apr 14, 20262+ dimensionsNo sponsored rankingsPrices checked today
A.O. Smith
A.O. Smith
$100
See on Amazon →
A.O. Smith · $100
vs
Aquasana AQ-MF-1
Aquasana AQ-MF-1
$112
See on Amazon →
Aquasana AQ-MF-1 · $112
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Compact Under-Sink Water Filters / Versus
What matters most to you?
Filtration system?
A.O. Smith
$100Checked recently
Match score100%
Carbon BlockNSF/ANSI 421 Year or Less
$99.99 on Amazon →
vs
Aquasana AQ
$112Checked recently
Match score100%
Direct ConnectNSF/ANSI 421 Year or Less
$112.49 on Amazon →
Head to head
A.O. SmithFeatureAquasana AQ
Carbon Block
Filtration system
Direct Connect
NSF/ANSI 42
Preferred certification for
NSF/ANSI 42
1-2 Years
Filter lifespan
1-2 Years
No
Need a dedicated faucet with
No
1-2 GPM
Preferred flow rate for the
1-2 GPM

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Key differences: A.O. Smith vs Aquasana AQ

Choosing between the A.O. Smith and the Aquasana AQ-MF-1 comes down to what matters most to you in a compact under-sink water filters. The type of filtration system determines the range of contaminants it can remove. The A.O.

Smith leans toward carbon block, while the Aquasana AQ-MF-1 offers direct connect. The A.O. Smith stands out for users who value carbon block and nsf/ansi 42 and 1 year or less.

Meanwhile, the Aquasana AQ-MF-1 is the stronger pick if direct connect and nsf/ansi 42 and 1 year or less are your top priorities. Rather than declaring an absolute winner, we recommend using the interactive comparison above — your priorities determine which product scores higher.

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