you still concerned about not having access to clean drinking water during a power outage?
GlacierFresh U03 is an RO system that operates without electricity and requires only 5 steps to install, eliminating the need to hire a handyman.
What is the YouTube Creator Saying
Filter cartridge material
Safe Water Guardian
PP-Cotton+ Activated Carbon + Reverse Osmosis Membranes purification solution, Multi-filter your regular water, let your family can drink it directly.
what to remove or reduce from water
5-Stage Filtration
Multi-stage filtration is like Iron Man, protecting your safety, removing harmful impurities such as lead, chlorine and microplastics! This U03 water purifier can remove 99.99% of impurities. Say goodbye to all harmful substances in water.
3:1 Pure to Drain
Save Water Charge
Glacierfresh-u03 undersink RO system is environmentally friendly and efficient, Its 3:1 purified water to drain ratio ensures efficient water usage.
Replacement Filter
16 layers of RO membrane, machine rolled, far exceeding the 8 layers of the same industry merchants
And our reverse osmosis system passed strict quality control and SGS/NSF certifications.
- Granular Carbon Filter – Removes chlorine and odors, improves taste. Replace every 3–6 months.
- RO Membrane Filter – Removes heavy metals, bacteria, and viruses. Replace every 12-24 months.
- Composite Carbon Filter – Removes chlorine, mercury, and odors. Replace every 8-12 months.
Save sapce
Compact design
Glacierfresh U03 have a reasonable size，13.6*8.3 *16.5 inch((345 × 210 × 420 mm), saves a lot of space.
So if you care about clean water and space-saving solutions, you gotta checkout the reverse osmosis filtration system.
Low Noise
Thanks to its non-electric drive design, the u03 operates quietly compared to traditional electric reverse osmosis system. so there is no water boost pump running to make noise.
Installation
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.
Non-electric Drive
GlacierFresh U03 /OSMAX Reverse osmosis system working without electricity, So it will be more energy-efficient，No need to worry about lack of pure water due to power outage, Help you easily cope with water demand in power outage environments.
Trust Reviews From Users
Best Practices Assessment
After evaluation by 100 real users and 100 Youtube and Tiktok KOLs, more than 95% of users were able to complete the installation and put it into use within 30 minutes. We have reason to convince customers that the simplest reverse osmosis system installation is not just a slogan, practice is the truth.
FAQ
How to use GF-U03 RO System
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.
Low noise, If you are tired of the noise, this reverse osmosis system will be your best choice.
The liquid in the pressure gauge is mainly used for damping, lubrication, corrosion protection, temperature compensation and shock protection, ensuring that the pressure gauge works stably and accurately in various environments.
The reason why the water flow of the RO system is large at first and then small is mainly due to the combined effect of factors such as the pressure change inside the membrane and the pressure of the water storage tank. This is a normal phenomenon.
you need to drill a 1/4" hole in the drain. Be sure not to penetrate the opposite side
of the pipe.
The World Health Organization recommends that the TDS value of drinking water should be less than 500 mg/L(USA Standards)，Glacierfresh u03 RO System can reduce 80-90% 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.
What can GlacierFresh U03 Reverse Osmosis System remove?
PPC filter, which combines PP sediment, granular activated carbon, and carbon block filtration, primarily removes sediment, chlorine, and other impurities like PFAS, fluoride, heavy metals, and some VOCs. It also helps with odor and taste improvement by removing chlorine and other volatile organic compounds.
Reverse osmosis (RO) filters primarily 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 systems can also remove bacteria, viruses, and protozoa.
Activated carbon filters are primarily used to remove impurities from water, such as chlorine, sediment, volatile organic compounds (VOCs), and substances that affect taste and odor. They work by attaching these contaminants to the surface of the activated carbon through a process called adsorption. The main function is to enhance filtration performance again in the U03 RO System
★★★★★
We really value good tasting water and the Glacierfresh RO system with its filters delivers that to us. we have no trouble when using our regular city water. We are very happy with this system and get fast delivery on filters when they need replacing
Ellie
Customer Reviews
Overall rating: 4.9 / 5 from 164 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.
Product came in as expected nicely packed and within time expected. Installation was easy.
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.
I will say it significantly improved the taste of the water and the water quality is obviously better. I live this system does not use electricity!! It had no noise! I took a tds meter and checked different water and it’s done a really great job with our not so great city tap water!I would recommend this unit especially given its price and affordability!
Easier to Install 800GPD Reverse Osmosis System, Under sink RO System-Glacierfresh U03
Easy install. I tightened the faucet but it spins when the handle is turned on and off. Not sure if this is by design. Kind of wish faucet was locked in place. Looks great though and has awesome water pressure. Extremely quiet. No gurgling or noise.
Easier to Install 800GPD Reverse Osmosis System, Under sink RO System-Glacierfresh U03
I couldn’t be happier.
Easiest to Install 800GPD Reverse Osmosis System, Under sink RO System-Glacierfresh U03
Very clean tasting water! Easy to install. I only wish we had bought it sooner as we can no longer trust the city water supply. Chemicals are everywhere and we want to protect our family.
Easiest to Install 800GPD Reverse Osmosis System, Under sink RO System-Glacierfresh U03
Fast shipping and easy installation. No leaks and it started producing clean water immediately. TDS readings went from 405 down to 15. Highly recommend
Easiest to Install 800GPD Reverse Osmosis System, Under sink RO System-Glacierfresh U03
This RO system is was super easy to install. The build quality seems good. The main thing though is the water quality! I have been drinking my well water for 5 years with only a sediment filter. The water out of this RO system is incredible! It tastes unlike any water I have ever had in my life, it is so clean.
Easiest to Install 800GPD Reverse Osmosis System, Under sink RO System-Glacierfresh U03
Loved it thanks
Easiest to Install 800GPD Reverse Osmosis System, Under sink RO System-Glacierfresh U03
Water tastes great. R/O unit running 5 months now without any problems. Water testing shows PPM is 45 to 70, the same as when the unit was first installed.
Awesome filter! I have pretty hard water in my house and this is a game changer. Th health benefits have approved for my family including my pets since using.
In a word fantastic! I replaced my old tank system and this unit has great water flow and no waiting when filling a pot or something, I love it!
Very simple installation process. Instructions could be a little more detailed for plumbing novices. A helper to hold up the faucet will make it easier to fasten the nut underneath the sink.
GlacierFresh U03 800GPD Undersink Reverse Osmosis System - Tankless RO Water Filter
Very easy to install and I'm not even a DIY type. Has a great flow rate and is working perfectly.
GlacierFresh U03 800GPD Undersink Reverse Osmosis System - Tankless RO Water Filter
Nice to have good tasting water and coffee again. Well designed unit, efficient installation. Good purchase.
Love the ease of use and affordability also a huge bonus that it consistently puts out pressure
Love it thank you! Great tasting water. Easy to install.
The flow from the drink line is very weak even though there is plenty of water pressure that is flowing through the faucet from the non RO side. I always have to run the RO side for a minute or two until the water is in the safe zone to drink. Definitely not what I expected. System was easy to setup but the performance is disappointing.
Store owner replied: Hi Louis Thank you for your feedback, and I’m very sorry that the performance of your U03 system has been disappointing. I understand your concern about the weak flow from the drinking line, especially when the non-RO side has strong pressure. The U03 system has a built-in pressure tank. When the flow from the RO drinking line becomes weak, it usually means the pressure tank has not had enough time to refill and repressurize. Please try the following: Stop drawing water from the RO drinking line. Let the system rest for about 30 minutes without using any RO water. This allows the internal pressure tank to refill. After 30 minutes, open the RO faucet again and check the flow. In many cases, the flow will return to normal after the tank has had time to refill. It can also be normal to run the RO side briefly after a long idle period before the water quality stabilizes, but if the flow remains very weak even after resting the system, please contact us at info@glacierfreshfilter.com. We will help you troubleshoot further and find a solution. We appreciate you bringing this to our attention, and we’re sorry for the inconvenience. We want to make sure your system performs as expected.
Great price and easy installation. Paired it with a reminerlization filter. Everything that uses water tastes better now. No power requirements is nice too.
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.
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.
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.
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!
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.
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.?
This ro system offers strong convenience, compact design, and high output. I love it.
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.
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.
This ro system is easy to install relatively speaking and the taste is pretty good.
Simple to install, does what it says it does. Great purchase experience, highly recommend!
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.
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.
This unit is excellent, but the customer service far exceeded my expectations. I would not hesitate to purchase from this business.
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.
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.
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.
Did not need the large faucet. I would like to replace it with the single spout faucet if possible. The sales rep Brai was the one who held me.
GlacierFresh U03 800GPD Undersink Reverse Osmosis System - Tankless RO Water Filter
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.
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.