Aquasana · Under-sink filter
Aquasana Claryum 3-Stage Max Flow: what it removes and what it costs
Model: Claryum 3-Stage Max Flow (AQ-6300M; earlier AQ-5300+), brushed nickel item no. 100391704
The Aquasana Claryum 3-Stage Max Flow is certified (NSF/ANSI 42, NSF/ANSI 53 and NSF/ANSI 401) to reduce PFAS (PFOA), lead, chlorine, chloramine, mercury and microplastics and 2 more of the contaminants we track. For 2 people drinking and cooking with it, replacement filters cost about $184 a year.
8
certified reductions we track
11¢
filters per gallon at rated life
Price checked 2026-10-23. We may earn a commission.
What the Aquasana Claryum 3-Stage Max Flow removes
"Certified" means a certifier (NSF, WQA, IAPMO or CSA) lists this exact product for that reduction claim; the listing is linked. "Brand test only" means Aquasana cites a lab report but no certifier lists the claim. See certified vs. tested.
| Contaminant | Status | Evidence |
|---|---|---|
| PFAS | Certified | WQA listing, NSF/ANSI 53 ("PFOA") |
| Lead | Certified | WQA listing, NSF/ANSI 53 ("Lead") |
| Chlorine | Certified | WQA listing, NSF/ANSI 42 ("Chlorine") |
| Chloramine | Certified | WQA listing, NSF/ANSI 42 ("Chloramine") |
| Mercury | Certified | WQA listing, NSF/ANSI 53 ("Mercury") |
| Microplastics | Certified | WQA listing, NSF/ANSI 401 ("Microplastics") |
| Cysts | Certified | WQA listing, NSF/ANSI 53 ("Cyst") |
| VOCs | Certified | WQA listing, NSF/ANSI 53 ("VOCs") |
Not verified, either way (no certification or brand claim): Fluoride, Arsenic, Nitrate, Chromium 6, TDS, Bacteria and viruses, Iron, Copper, Uranium, 1,4-dioxane.
What it costs to run
Yearly cost = replacements per year × filter price, for each filter it uses; a filter is replaced at its gallon rating or its month limit, whichever comes first. Water use: drinking and cooking water (0.28 gallons per person a day, EPA's average adult intake).
| Household | Gallons a year | Filters a year | Total a year | Per gallon |
|---|---|---|---|---|
| 1 person | 102 | $184 | $184 | 180¢ |
| 2 people | 204 | $184 | $184 | 90¢ |
| 4 people | 409 | $184 | $184 | 45¢ |
Per-gallon costs in the table are for real use, so they also count any filter replaced at its month limit before it reaches its gallon rating. At rated filter life alone, filters cost 11¢ a gallon (the figure at the top of this page).
Replacement filters
| Filter | Rated life (gallons) | Rated life (months) | Price |
|---|---|---|---|
| Claryum 3-Stage Max Flow Filter Replacements (2 filters + 5 micron pre-filter) | 800 Source note | 6 Source note | $91.99 Source noteList price; Water for Life price $78.19; replacement page showed Out Of Stock 2026-10-23 aquasana.com |
Specs
- Type
- Under-sink filter
- Price
- $450
Source note
MSRP $449.99; sale price $224.99 seen 2026-10-23 (brushed nickel; chrome AQ-6300M-CHR shown out of stock) aquasana.com
- Installation
- DIY (under-sink or inline fittings)
- Flow rate
- 0.72 gal/min
Source note
Rated service flow per brand product specifications (44% faster than Claryum 3-Stage) aquasana.com
- Needs power
- No
Compare the Aquasana Claryum 3-Stage Max Flow
Common questions
What does the Aquasana Claryum 3-Stage Max Flow remove?
The Aquasana Claryum 3-Stage Max Flow is certified (NSF/ANSI 42, NSF/ANSI 53 and NSF/ANSI 401) to reduce PFAS (PFOA), lead, chlorine, chloramine, mercury and microplastics and 2 more of the contaminants we track. For 2 people drinking and cooking with it, replacement filters cost about $184 a year.
Does the Aquasana Claryum 3-Stage Max Flow remove PFAS?
Yes. It is certified for PFOA reduction under NSF/ANSI 53 (WQA listing).
How much does the Aquasana Claryum 3-Stage Max Flow cost to run?
About $184 a year for 2 people ($184 for 1, $184 for 4), counting replacement filters, for drinking and cooking water (0.28 gallons per person a day, EPA's average adult intake).
Data checked 2026-10-23. 102 filters tracked.