Water dispensers with RO
S02 400GPD Tankless Reverse Osmosis System
$799.00
Sale price
$799.00
Regular price
$999.00
Save $200
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UnderSink
S02 400GPD Tankless Reverse Osmosis System
- Reduces 99% of total dissolved solids — including lead, arsenic, chlorine and PFOA — through an NSF-certified RO membrane
- Two membranes instead of one, then adds back calcium, potassium and magnesium, so clean water still tastes like water
- No storage tank and 400 gallons a day: your cabinet stays usable and the water never runs out mid-glass
- Twist-and-replace cartridges and an LED that tells you when — about $355 a year to keep it running
$799.00
Sale price
$799.00
Regular price
$999.00
Save $200
Shipping calculated at checkout.
Pickup currently not available
30-day returns
Taste it. Don't love it? Send it back.
Third-party lab tested
Full report published, not summarised.
Free express shipping
Arrives in 2–8 business days.
24/7 Assistance
Contact us in any moment to get help.
Order todayArrives between Wed 16 Sep and Thu 24 Sep Free express shipping on every order
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Reduces 90% of TDS
Third-party lab verified
30-day returns
Taste it. Don't love it? Send it back.
0% APR financing
Prequalify in 60 seconds
Free express shipping
Arrives in 2–8 business days
The proof
What actually comes out of your water.
Boiling kills bacteria. Pitcher filters improve taste. Neither removes dissolved metals or forever chemicals. Reverse osmosis does — and we publish the numbers.
- Lead
- Arsenic
- Mercury
- PFOA & PFOS
- Fluoride
- Chromium
- Cadmium
- Chlorine & chloramine
- Nitrate
- Benzene
- Asbestos
- Cysts
- Chromium VI
- Turbidity
Reduction by contaminantLab report
Total dissolved solidsTDS, ppm
99%
LeadPb
98%
PFOA & PFOSforever chemicals
96%
Chlorine & tastefree chlorine
99%
ArsenicAs (V)
95%
How it works
Six stages between the tap and your glass.
Each stage handles what the one before it could not. The order is why reverse osmosis reaches what a pitcher filter cannot.
-
1
Sediment pre-filter
Catches the visible material first, so the finer stages are not clogged by it.
Removes Rust, sand, silt, sediment
-
2
Condensed Carbon Block
Adsorbs the compounds that make tap water taste and smell like a pool.
Removes Chlorine, chloramine, odour, VOCs
-
3
Sintered Carbon Block
Adsorbs the compounds that make tap water taste and smell like a pool.
Removes Chlorine, chloramine, odour, VOCs
-
4
1st RO Membrane
The stage that does the work no pitcher filter can. Two membranes instead of one.
Removes Lead, arsenic, PFOA and PFOS, fluoride, nitrate, dissolved solids
-
5
2nd RO Membrane
The stage that does the work no pitcher filter can. Two membranes instead of one.
Removes Lead, arsenic, PFOA and PFOS, fluoride, nitrate, dissolved solids
-
6
Alkaline mineralization
Adds back what the membrane took out, so clean water still tastes like water.
Removes Adds calcium, potassium and magnesium
In the box
- S02 filtration unit1 ×
- Dedicated faucetBrushed finish1 ×
- Feed water adapter1 ×
- Drain saddle assembly1 ×
- Filter cartridgesPre-installed3 ×
- Tubing setColour-coded, pre-cut1 ×
- Power adapter1 ×
- Installation manual1 ×
Not included: A drill, in the rare case your cabinet has no existing hole for the faucet.
Installation
-
1
Shut off the cold water
The valve is under the sink. Turn it clockwise until it stops.
-
2
Fit the faucet
Use the existing hole in the sink or countertop. Most kitchens already have one.
-
3
Connect the four tubes
Colour-coded and pre-cut. Push each one in until it seats, then hand-tighten the collar.
-
4
Flush for ten minutes
Open the water, plug it in, and let it run. The first tank clears the carbon dust.
Before you start
What you need on the counter
Everything that goes in the sink is in the box. These are the tools you supply — the drill bit sizes are the two figures worth checking before you begin.
- You supply
Drill
Any cordless drill works. It is only used if your sink has no spare hole.
- You supply
Drill bit
1/2 in
For reverse osmosis faucets. The standard hole size on our RO faucets.
RO faucets
- You supply
Hole saw / drill bit
1-3/8 in
For the H12 instant heating faucet. Only needed if you are cutting a new hole in the countertop or sink.
H12 faucet
- You supply
Teflon tape
Two or three wraps on every threaded joint. A roll costs about a dollar and prevents the slow drip nobody notices for a week.
- You supply
Adjustable wrench
For the supply line nuts. Snug, then a quarter turn — over-tightening cracks plastic fittings.
- You supply
Towel and a small bucket
The line holds water even after you shut the valve. Half a cup, on your cabinet floor if you skip this.
Don't own a drill?
Most sinks already have the hole the faucet needs, in which case no drilling happens at all. You can get a 3 Ways Faucet or get help from a handyman or a plumber
You don't want to drill
Add a 3-Way Faucet
$79.00$99.00Save $20.00
- A single faucet dispenses regular hot or cold water and water from your reverse osmosis system.
- Upgrade your water and your kitchen.
- Tenants-friendly—install it today, take it with you tomorrow.
- Same 30-day return, on the whole pack.
Which one
Three systems. One difference that matters.
All filters the same water to the same standard. Pick on where it goes and how fast you need it.
| Feature | This pageS02 400GPD Tankless Reverse Osmosis SystemTankless, on demand | Y04-75GPD Reverse Osmosis System with TankWith a reserve tank | Twist & Lock Reverse Osmosis System 30GPDWith a reserve tank |
|---|---|---|---|
| Daily capacity | 400 gallons a day | 75 gallons a day | 35 gallons per day |
| Tankless | |||
| Quick change | |||
| Speed pump | |||
| Filter replacement reminder | |||
| Auto Flush | |||
| Alkaline minerals | |||
| RO membrane | 2 | 1 | 1 |
| Cabinet space needed | Minimal — no tank | Tank plus unit | Tank plus unit |
| Filters per year | $355* | $63* | $63* |
| Best for | Families of 3+, heavy cooking, instant refills | Steady use, water held in reserve | Couples and smaller households |
| Price | $799 | $559 | $490 |
| You are here | View the Y04 | View this system |
What it costs to keep
The running cost, before you ask.
Every filter, how often it is replaced, and what it costs. If a competitor does not publish this, it is worth asking why.
Based on a household of four. Heavier use shortens the intervals. Quality of the Water can reduce the lifespan.
Frequently bought together
Add the H10 faucet and save more.
Filtered, instant hot and cold water from a single tap. Installed in the same 30 minutes as the system, so there is no second afternoon under the sink.
-
S02 400GPD Tankless Reverse Osmosis System -
Instant Heating Faucet H12 -
Free×2SF03 Shower Filter — 5 stages, fits any standard shower
Questions
Before you buy.
How often do the filters need replacing, and what do they cost?
CF filter every 6 months or 550 gallons. CB filter annually or 1,100 gallons. RO membrane every 2 years or 2,900 gallons. Replacements start at $24, and a subscription ships them before they expire.
Will it fit under my sink?
The tankless design is the most compact option we sell, because there is no pressurised tank to house. Measure your cabinet depth before ordering — send us a photo and we will confirm the fit.
Do I need a plumber?
No. The connections are push-fit and the tools are in the box. Most customers finish in about 30 minutes with the install video.
Does reverse osmosis water taste flat?
Not with this system. The final stage adds calcium and magnesium back after filtration, which is what gives the water a smooth rather than empty taste.
What if it does not work for me?
Return it within 30 days for a full refund. We would rather you test it in your own kitchen than take our word for it.
Can I pay monthly?
Yes. Prequalifying for 0% APR financing takes about 60 seconds and does not affect your credit score.