GlacierFresh U03 RO System Product Parameters
| U03 Technical Specifications | |
|---|---|
| Safety Certifications |
NSF 42.53.58
SGS.CSA Test
Tested for premium safety and drinkable water quality. |
| Power Requirement | Non-Electric Operation (Zero risk of shock, works during power outages) |
| Rated Flow Rate | 0.6 GPM (1.5 L/min) — Rapid on-demand flow |
| Total Rated Capacity | 1,427 Gallons (Extended filter life) |
| Inlet Water Pressure | 0.25 – 0.7 MPa (Municipal Supply Compatible) |
| Operating Temperature | 41 – 100 °F / 5 – 38 °C (Inlet Water) |
| Ambient Temperature | 39 – 104 °F / 4 – 40 °C |
| Product Dimensions | 13.6 × 8.3 × 16.5 in (345 × 210 × 420 mm) |
What is the YouTube Creator Saying
Easier to install than other RO system
After evaluation by 100 real users and 100 Youtube/Tiktok KOLs, more than 95% of users were able to complete the installation and put it into use within 30 minutes. We have reason let our customers to believe that the easiest Reverse osmosis system to install is not just a slogan, practice is the truth.
Of course, If you have any problems during installation or use, please feel free to contact us and we will be happy to help you solve it.
Household water safety steward
PP-Cotton+ Activated Carbon + Reverse Osmosis Membranes filter solution, Multi-filter your regular water, make your family can drink it directly.
At the same time, the faster water flow speed means you don’t have to wait too long to get water.
7-Stage Filtration RO System
Glacierfresh u03 have 7-stage filtration , Multi-step filtration makes it easy to filter water sources, removing all those nasty impurities. like lead, chlorine, and microplastics! This little beast removes 99.99% of impurities. Say goodbye to all the nasty stuff in your water.
Mineral Retention
Our reverse osmosis systems effectively remove contaminants while preserving beneficial minerals, such as calcium and magnesium, that are essential for human health and taste. typically retain approximately 10-20% of these beneficial minerals, ensuring clean, naturally balanced drinking water.
Save on your monthly bills
Glacierfresh/Osmax U03 undersink RO system is environmentally friendly and efficient, Its 3:1 purified water to drain ratio ensures efficient water usage. and No need to plug in electricity, effectively resist the risk of power outages and water leakage and electric shock, while saving your monthly bills.
0.0001 Micron RO Membrane
The U03 RO filtration system operates without electric drive, So it will be more energy-efficient and quieter. Reduce or even eliminate noise.
It is worth noting that the RO membrane thickness of this system reaches 16 layers, which can be seen from the fact that our RO replacement filter is as big as a bowl, far exceeding other products on the market, ensuring the last line of defense for safe water use.
And our reverse osmosis system passed strict quality control and NSF 58 certifications.
Compact design
Glacierfresh U03 RO system have a reasonable size，13.6*8.3 *16.5 inch. saves a lot of space.
So if you care about clean water and space-saving solutions, you gotta checkout the reverse osmosis filtration system.
Accessories List
Now, let's talk installation. It's straightforward, even for a noob like me. Plus, changing the filters is a breeze. No fancy tools needed. All-in-one machine, no need to pay for plumber or handyman, you can easily install it by yourself according to our user manual.
RO filtration ensures that lead, chlorine, fluoride, and other impurities are removed from your drinking water. Reverse Osmosis water filtration is unrivaled when it comes to removing impurities from water in an efficient, cost-effective method.
Glacierfresh U03 800G RO systems are designed for DIY installation. If you choose the faucet no drilling solution, installation will be easier and faster You can install the system in 20 minutes. Simply refer to the instruction manual and instructional videos, or contact us by email.
The World Health Organization recommends that the TDS value of drinking water should be less than 500 mg/L，Glacierfresh u03 RO Systemcan reduce 40%-60% based on your tap water. It is also related to the local feed water pressure and local water quality.
After using for a period of time, the surface of the RO membrane will crystallize or accumulate scale, thus affecting the water flow. At this time, you should consider replacing the filter. If this problem still occurs after replacing the filter element, please contact us.
When this happens, please consider whether the PPC filter is blocked and water cannot enter the RO membrane for filtration. It is recommended to replace the PPC filter，If the pressure gauge value is still 0, please contact us to confirm whether the pressure gauge is damaged.
Reverse osmosis (RO) filtersprimarily remove dissolved salts, minerals, and larger molecules from water, including certain heavy metals, chemicals, and some microorganisms. Specifically, it effectively removes contaminants such as lead, nitrates, pesticides, sulfates, fluorides, arsenic, and various volatile organic compounds (VOCs).RO systemscan also remove bacteria, viruses, and protozoa.
Customer Reviews
Overall rating: 4.9 / 5 from 130 reviews.
Setup was not too difficult. The guide said it would take 30 minutes, but realistically it took me about 1 1/2 hours. It had been a while since I had done any sort of plumbing, so I was taking it a bit slow. The included instructions were very helpful and easy to follow. This device uses no electricity. Comes with all the adapters and fittings you'll need. Be sure to pop on the retainer clips once the fully insert the tubes into the sharkbite fittings. I managed to get it right on the first try with no leaks.
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
I just love my new RO system! I love that it came with the whole new faucet system. The water tastes fantastic, and it really works wonderfully. I highly recommend.
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
This water filter has been great so far. Installation was fairly simple, It took us about 45 minutes to have it fully installed and the tiny faucet has to run for 30 minutes once everything is assembled. After running it for the required 30 minutes, I tested the water from my regular faucet and from the purified faucet and they have a pretty significant differerence. My regular faucet registered 196 ppm, and the filtered faucet registered 88. I do let it run for about a minute each time I turn it on, before filling up a glass, just to be sure any impurities that may have built are flushed out. The water itself tastes great and so much better than our unfiltered water.
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
Used as a substitute for Distilled in ultrasonic humidifiers. Excellent performance, indistinguishable from distilled. Four (4) months of continuous use. No white dust residue and no need for periodic disinfection. Very Happy
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
Love it. The water tastes great. And I feel good that I'm getting purified water with the bad stuff removed. And the company was good to deal with.
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
Great RO system and customer service. Installation is very easy too.
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
We've only had it installed about a week and a half, but are very pleased with it. It consistently gives the water easily and is very convenient to use. It takes up less room on our counter compared to our previous gravity fed filter.
GlacierFresh 800GPD Undersink Reverse Osmosis System - Tankless RO Water Filter U03
Very easy setup and does the job it’s supposed to…looks clean and neat under the sink as well
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
Easy to install, and my water tastes so much better!
GlacierFresh 800GPD Undersink Reverse Osmosis System - Tankless RO Water Filter U03
I finally enjoy my well water 🙌
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
Great filter, rough start with shipping Ordered an under-sink water filtration system from Glacier Fresh and ran into a backorder delay. I reached out to ask what was going on, and customer service was solid about it — offered a refund option, and when I decided to stick with the order, they threw in some extra filter replacements as a thank-you for the wait. Appreciated that. Once it arrived, everything was in the box and installation was surprisingly easy. No need to run new lines through the house — it hooked up to the existing holes/connections at the sink. I had a friend who’s a certified plumber install it (probably could’ve done it myself, but wanted the peace of mind), and it was quick. Performance-wise, this blows my old GE reverse osmosis filter out of the water. The unit itself is way more compact — no bulky tank taking up half the cabinet — but the capacity is incredible. I can fill a full gallon, shut it off for a minute, turn it back on, and still get strong pressure. My old system would start losing pressure after about half a gallon straight. Big upgrade. The water tastes great. During the backorder wait we were buying bottled water and doing refill runs weekly, so having this now is a huge convenience upgrade on top of the taste. Bottom line: shipping delay aside, the product itself and the customer service recovery made this an easy recommend. Great tasting water, compact system, excellent pressure, and painless install.
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
I purchased a $5 TDS Meter to electronically measure my water. My tap water measures 365 PPM TDS. Approved for drinking, but not great. Above 500 is unacceptable per the EPA. The RO system is producing water measuring 16 PPM TDS. Quite impressive. TBH, I cannot taste the difference. It tastes a little more flat, that is about it.
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
Install was ULTRA easy. If you have installed any basic kitchen plumbing fixtures you will have no problem. I already had a dedicated drinking water faucet so it was just a matter of connecting to that. I did not use the provided faucet. or have to drill to fit.
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
The water flow is great. It does slow as the pressure drops during longer fills, but never to an unreasonable level.?Just be aware that filling a coffee carafe or a large water bottle will take just a bit longer than something like a water dispenser. It seems about on par with a refrigerator dispenser.
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
This is an excellent RO system. It produces excellent tasting water, does not require power and runs nearly silent. Most importantly however, this may be one of the easiest installs for a machine like this ever produced. It required no hardware store trips and amazingly, not a single bad word was uttered!
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
Installation was easy. I did use a different faucet, that better matched my kitchen faucet color scheme. The rate of flow lessens, after a few seconds but still provides water with only minor delay. I haven't had the filtered water tested, so can only assume that it is as pure as would be expected. On a side note, Your customer support staff are very kind and responsive.
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
This has been a great upgrade for our home—excellent water quality, easy installation, no power requirement, and low ongoing costs. If you are looking for a simple, effective under-sink RO system that delivers real results without unnecessary complexity, this one is absolutely worth considering.
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
Filter changes are extremely easy compared to traditional canister-style RO systems, which is a major advantage. Water flow is also excellent and far faster than my previous RO system, saving time when filling containers.?
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
This ro system offers strong convenience, compact design, and high output. I love it.
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
So far it functions perfectly and we have not run into any issues since installation. The design is also sleek and fits nicely under our sink. The water pressure seems to do well and it comes out in a steady stream.
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
Absolutely no dissapointment in this purchase. I have so much extra space under my sink, this is one of the very limited tankless that does not require power, and I have clean tasting water again! Highly recommend this for anyone looking for a ro system.
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
This ro system is easy to install relatively speaking and the taste is pretty good.
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
Simple to install, does what it says it does. Great purchase experience, highly recommend!
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
It is quiet as advertised. The constant flow rate is a little slow, but so was my previous one.?And my TDS meter noticed a huge improvement over my highly mineralized city water.
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
I had some concerns initially with the installation manual and the screw length for the drain saddle. I coordinated with their customer support and they were very responsive. I am updating my review to 5 stars. I am happy with the taste of the RO water and also the product overall.
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
I feel so much better knowing it removes 99.99% of contaminants. Even my husband, who is picky about water taste, noticed how fresh and crisp it is.
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
I switched from a traditional RO system with a tank, and the difference is night and day. The 800GPD flow rate is no joke—I can fill my large stockpot in seconds without waiting for a tank to repressurize.
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
The tankless design freed up so much space under my sink. Installation was straightforward; I am not a plumber and had it running in about 45 minutes. The water tastes incredibly clean with zero chlorine smell.
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
I compared several undersink RO systems, and the U03 had the best balance of speed (800GPD), filter stages, and price. The fact that it retains some beneficial minerals like calcium and magnesium is a plus—water does not taste flat like some other RO systems.
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
Our tap water used to have a strong chlorine smell, but now it tastes crisp and clean. I also love how fast the flow rate is compared to older RO systems I have used before.
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
What sold me was the non electric design. We occasionally deal with power outages during storms, so having an RO system that still works without electricity gives me peace of mind. It is also super quiet — no annoying pump noise at all.
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
The compact design freed up a lot of space under my sink, which was a huge plus for our small kitchen.
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
It is been a great upgrade for our family, especially since we drink a lot of water every day.
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
The water tastes super clean, no chlorine smell at all, and I love how fast it fills a glass compared to my old RO system. The tankless design also freed up a lot of space under my sink. Installation was easier than expected too. Definitely worth it.
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
I went with the Elite version so I did not have to drill a new hole, which made things even easier. Filter replacement also looks simple, just twist and swap.
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
If you want a compact, modern RO setup without dealing with a bulky tank, this is a solid choice.
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
The water flow is strong and consistent, and I do not have to wait around like I used to with my old tank system. So far, very happy with the performance.
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
This is a great system. The water tastes clean and pure and is delivered with good pressure even without a pump. Installation is straightforward and easily accomplished.
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
We switched from bottled water to this RO system, and I wish we had done it sooner. The water tastes just as good (if not better), and we are saving money and reducing plastic waste. The compact design is perfect for our small kitchen, and filter changes are quick and hassle free.
GlacierFresh U03 Tankless Reverse Osmosis System | 800 GPD Fast Flow & 3:1 Pure-to-Drain Ratio
Great product, Great customer service, they answered all questions same day. Recommend.
GlacierFresh 800GPD Undersink Reverse Osmosis System - Tankless RO Water Filter U03