About the RO System-U03 The reverse osmosis filtration system is not powered by electricity, so there is no noise. The newly designed waterway is pressurized, with a lower risk of leakage, more energy-efficient and quieter. High-efficiency filtration: The reverse osmosis system has 5 layers of filtration to reduce most pollutants. can effectively filter fluoride, reduce tds, microplastics, PFOA, PFOS, asbestos, mercury, arsenic, chlorine, nitrates, nitrites, drugs and lead, with a filtration rate of up to 99.99%. 3:1 pure water drainage ratio: Flow rate is up to 0.6 gallons per minute. compared with ordinary RO systems, This tankless reverse osmosis system has a drainage ratio as low as 3:1, Water production rate up to 75%. Meet the first-level energy efficiency standard. Easy filter replacement - Turn off the water supply valve. Simply unscrew the old filter and replace it with the replacement filter to continue removing contaminants. Tank-less Design: Glacierfresh tank-less reverse osmosis system has a stylish, space-saving design, it saves more than 70% of under-sink space and prevents re-contamination. Filter Replacement Cycle; RO filter replace every 1-2 years, PPC and carbon filter replace every 6-12 months. Learn more about the product info, please click here. Shipping & Returns Free shipping on all US orders.Chloride This item support Lifetime warranty. Handle order time 1-2 days. Delivery time 1-7 working days Learn more