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GO
Best choice
SLOW
Contains ingredients with possible health concerns
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Contains harmful ingredients
GO

AO Smith

Smith Whole House Salt Free Descaler System

Last verified: December 2, 2025

Why This Product is Rated GO

Smith Whole House Salt Free Descaler System by AO Smith has been evaluated by Million Marker and meets our strict safety standards. This product is rated GO, meaning it is free from harmful chemicals like BPA, phthalates, parabens, and other endocrine-disrupting compounds.

Products with a GO rating represent the safest choices in their category and are recommended for everyday use.

Learn more about how Million Marker scores products →

Frequently Asked Questions

Smith Whole House Salt Free Descaler System by AO Smith - Non-toxic Water Filters product rated GO by Million Marker, free from BPA, phthalates, and parabens

Where to buy

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