Aquasana · Updated July 2026

Aquasana OptimH2O: price & specs

Name: Aquasana OptimH2O
Brand: Aquasana
Price: 439.99 USD
Availability: InStock

The Aquasana OptimH2O costs $439.99, #4 cheapest of 8 reverse osmosis systems (median $445). It earns a Bronze Deskmark — 38/100 pay-blind standing, #7 of 10 in class.

Verified Jul 11, 2026 · figures linked to their source in the table below

Check current price at amazon.com Recorded 2026-07-11 — live price may differ. As an Amazon Associate we earn from qualifying purchases.

Aquasana OptimH2O. Every price and spec below is linked to its source and dated — no guesses.

Source: web.archive.org verified 2026-07-11 ✓ corroborated verify in ledger

Aquasana OptimH2O — Aquasana — Image: web.archive.org (© Aquasana)

Is the Aquasana OptimH2O a good buy?

At $440, the Aquasana OptimH2O is #4 cheapest of the 8 reverse osmosis systems we track, where the median is $445. On the spec sheet, its filtration stages of 3 is the lowest of the 10, its rated capacity gpd of 13.32 is the lowest of the 7, and its membrane life months of 12 is the lowest of the 5.

Specifications

Price (US)	$439.99 Manufacturer's stated MSRP of $439.99, per the archived Aquasana OptimH2O product page (verbatim "MSRP: 439.99"). The same page showed a promotional sale price of $199.99, but MSRP is used per methodology. Price captured 2021-01-19 via the Wayback Machine; the model is now discontinued and its live URL redirects to the successor SmartFlow.
Brand	Aquasana
Released	—
Install type	under-sink
Filtration stages	3
Rated capacity gpd	13.32
Pure to drain ratio	—
TDS reduction pct	—
Remineralization	Yes
Requires electricity	No
Storage tank gal	3.2
Nsf certified standards	42, 53, 58, 401
Membrane life months	12
Annual filter cost usd	—

Source: web.archive.org (verified 2026-07-11) · corroborated by amazon.com. The Aquasana manufacturer product page (captured 2021-01-19 via the Wayback Machine, because the live URL now redirects to the successor SmartFlow model) identifies this exact unit as the OptimH2O Reverse Osmosis + Claryum, model AQ-RO-3 / AQ-RO-3.55, and states verbatim: MSRP $439.99, Daily Production (DPR) 13.32 gallons, a 3.2-gallon RO holding tank, NSF/ANSI Standards 42, 53, 58, 401 certification, "the system does not require electricity," and a Stage 1 (Carbon)/Stage 2 (RO Membrane)/Stage 3 (Claryum) design plus remineralization. Amazon's listing for AQ-RO-3.55 (OptimH2O Reverse Osmosis + Claryum) corroborates the model identity and several specs (Under Sink, Power Source: No Power, NSF/ANSI 42/53/58/401, 1-year RO membrane, remineralizer) though it shows the item as currently unavailable with no price. The newer SmartFlow (AQ-SFRO2) unit the live manufacturer page now redirects to is a different model with different specs (0.7 GPM, 25.7 gal/day, 90 contaminants) and was explicitly excluded.

Is the Aquasana OptimH2O worth it vs cheaper reverse osmosis systems?

Aquasana OptimH2O against its closest cheaper and pricier reverse osmosis systems on the specs that matter — every value sourced. See all 8 ranked →

Product	Price	Install type	Filtration stages	Rated capacity gpd	Remineralization	Requires electricity
Aquasana OptimH2O this	$439.99	under-sink	3	13.32	Yes	No
iSpring RCC7AK	$241.99	under-sink	6	75	Yes	No
Brondell Circle RC100	$449.99	under-sink	4	—	No	No

Frequently asked questions

How much does the Aquasana OptimH2O cost?

The Aquasana OptimH2O has a US price of $439.99 (Manufacturer's stated MSRP of $439.99, per the archived Aquasana OptimH2O product page (verbatim "MSRP: 439.99"). The same page showed a promotional sale price of $199.99, but MSRP is used per methodology. Price captured 2021-01-19 via the Wayback Machine; the model is now discontinued and its live URL redirects to the successor SmartFlow.), as of 2026-07-11.

How does the Aquasana OptimH2O compare on price?

At $440, the Aquasana OptimH2O is #4 cheapest of the 8 reverse osmosis systems we track, where the median is $445.

What are the Aquasana OptimH2O's key specs?

Aquasana OptimH2O (Aquasana): installType under-sink, filtrationStages 3, ratedCapacityGpd 13.32, remineralization Yes, requiresElectricity No. Full sourced spec sheet verified 2026-07-11.