Aquasana SmartFlow Reverse Osmosis Water Filter - Remineralized RO

In this review of the Aquasana SmartFlow Reverse Osmosis Water Filter, the bottom line is simple: this under-sink RO system is for homeowners who want professional-level contaminant removal with better-tasting, remineralized water and reasonably low maintenance. The reviewer found the system's WQA-certified performance and the included Remineralizer to be the strongest reasons to buy, since it reduces a wide range of contaminants while restoring calcium and magnesium for improved flavor. Installation is straightforward for a competent DIYer, but professional installation is recommended for some kitchens.

Key Features

• WQA Certified Performance: Certified to meet NSF/ANSI 42, 53, 58 and 401 standards so it effectively reduces up to 99.99% of contaminants including fluoride, lead, PFAS and chlorine.
• SmartFlow Technology: The advanced reverse osmosis membrane is designed to be ultra-efficient, producing more purified water with less wastewater compared with some older RO designs.
• Remineralization: A built-in Remineralizer restores calcium and magnesium, improving water taste and returning beneficial minerals often removed by RO systems.
• Longer Filter Life: Filters and membrane are engineered for extended service life so you replace cartridges less often and avoid frequent maintenance.
• Convenient Replacements: Twist-out filter cartridges make swaps easy and reduce single-use plastic by replacing the equivalent of 2,750+ water bottles per filter set.
• Complete Kit Included: The package includes the first set of filters, RO membrane, RO tank, brushed nickel faucet and parts for under-counter installation, plus a 2-year limited warranty.

Who It's For

The Aquasana SmartFlow RO system is best for homeowners who are concerned about a broad list of contaminants - from fluoride and chromium 6 to PFAS and microplastics - and who value water that tastes better because of remineralization. It suits kitchens where under-sink space is available for an RO tank and where users prefer a dedicated faucet for drinking water.

It is also a good fit for people who want an efficient membrane that reduces water waste and longer filter intervals to limit ongoing hassle. Those who need an ultra-compact, countertop unit or who cannot route plumbing under the sink should consider other filtration styles.

Pros & Cons

Pros

• Extensive contaminant removal with WQA certification for multiple NSF/ANSI standards ensures reliable performance.
• SmartFlow membrane reduces water waste compared with older RO systems and provides consistent purified output.
• Remineralizer improves taste and restores healthy minerals often lost in RO filtration.
• Easy twist-out filter replacements and included parts make maintenance approachable for most users.

Cons

• Requires under-sink space for the RO tank and some plumbing work; professional installation may be needed for complex setups.
• As with any RO system, initial cost and replacement filters are ongoing considerations compared with simpler faucet filters.

Specifications

Brand	Aquasana
Certification	WQA; meets NSF/ANSI 42, 53, 58, 401 and CSA B483.1
Contaminant Reduction	Up to 99.99% of 90 contaminants incl. fluoride, PFAS, lead, chlorine
Included Components	First set of filters, RO membrane, RO tank, brushed nickel faucet, installation parts
Filter Replacement	Twist-out cartridges; each set replaces 2,750+ plastic bottles equivalent
Warranty	2-year limited warranty

Our Verdict

The Aquasana SmartFlow RO system is a strong choice for those who want thorough, certified contaminant removal with the added benefit of remineralized taste and reduced water waste. It represents good value for households seeking long filter life and easy replacements, though buyers should plan for under-sink installation and occasional cartridge costs.

Frequently Asked Questions

Does this system remove fluoride?
Yes. The system is WQA certified to reduce fluoride among other contaminants to very low levels.

How difficult is filter replacement?
Filter cartridges use a twist-out design that most users find simple; replacement intervals are longer than many basic filters.

Is professional installation required?
Professional installation is recommended for complex plumbing but competent DIYers can install using the included parts.