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Internet #312673873

Model #RO500

Store SKU #1005187478

Tankless Reverse Osmosis Water Filtration System, 500 GPD, Brushed Nickel Faucet, 2:1 Pure to Drain Ratio

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  • 500 GPD 3-stage tankless RO system w/ 2:1 pure to drain ratio
  • Removes up to 99% of 1000+ contaminants
  • Filter replacement in seconds
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Product Overview

ISPRING has been dedicated to providing high quality drinking water to families across the United States since 2005. ISPRING RO500 is the next generation reverse osmosis filtration system. Just like you trust ISPRING RCC7 series RO systems, you can count on the RO500 that has raised the bar for water purification. ISPRING RO500 is an ultimate under-sink reverse osmosis system that overcomes all traditional reverse osmosis filtration system drawbacks. It features real-time water quality monitoring, filter change indicator, and quick filter replacement, which makes it one of the most advanced RO water filtration system.
  • [Next Generation RO System] iSpring RO500-BN is the next generation reverse osmosis filtration system. Just like you trust iSpring RCC7 series RO systems, you can count on the RO500-BN that has raised the bar for water purification. Experience less waiting time when you fill up your cup, pitcher, or cooking pots with clean and tasty water. With a fast flow rate of up to 0. 4 gallons per minute, this RO system can satisfy the water needs of families, offices, coffee shops, restaurants, and more.
  • [Superb Filtration Performance] With its 1st-stage 3-in-1 composite Sediment and Carbon Block filter and 2nd-stage advanced RO Membrane, RO500-BN effectively removes TDS, limescale, up to 99% of over 1, 000 contaminants, including lead (removes up to 98%), chlorine, fluoride, arsenic, asbestos, calcium, sodium, and more. 3rd stage Carbon Block Filter further enhances the taste of the purified water. Enjoy all the benefits of drinking clean and refreshing water.
  • [Economical and Ecological Choice] With an exceptional pure water to waste water ratio(up to 2: 1), RO500-BN saves water waste by up to 400% compared to a traditional RO system. This industry-leading pure-to-waste ratio contributes to reduced water bills and less water going down the drain. Featuring a sleek tankless look, RO500-BN frees more space in your under-sink storage area and adds aesthetic pleasure to your kitchen.
  • [500 GPD Fast Water Flow] The RO500-BN RO system produces 500 gallons of filtered water per day. With a fast and stable water flow rate, this RO system fills an 8oz cup with water in 6.5 seconds, which is ideal for drinking water. The RO500-BN RO water filtration system also meets the water needs of big families and companies.
  • [Easy to Install & Replace Filter] With a detailed instruction manual and access to lifetime technical support, it is easy to install and maintain. Replacement filters for all models are available for order. Easy twist and lock filters without cutting off the water supply.
  • [Exemplary lifetime support in USA] backed by a 30-day money-back guarantee, 1-year manufacturer warranty and extended warranty upon registration. Life time CS and tech support from Atlanta, GA.

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Additional Resources

From the Manufacturer

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Tankless Reverse Osmosis Water Filtration System, 500 GPD, Brushed Nickel Faucet, 2:1 Pure to Drain Ratio
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NameH2O+ Circle Reverse Osmosis Water Filtration SystemTankless Reverse Osmosis Water Filtration System, 500 GPD, Brushed Nickel Faucet, 2:1 Pure to Drain RatioTankless RO Reverse Osmosis Water Filtration System 500 GPD Fast Flow with Oil Rubbed FaucetTankless RO Reverse Osmosis Water Filtration System, 500 GPD Fast Flow with Natural pH AK Remineralization
Contaminants FilteredLead, Chlorine, CopperLead, Chlorine, Copper, Fluoride, IronChlorine, Bacteria, FluorideChlorine, Bacteria, Fluoride
House Hold Size3-4 people8+ peopleUnspecifiedUnspecified
Filtration MethodCarbon Block,Hollow Fiber Membrane,SedimentActivated Carbon,CTO,Carbon Block,Coconut Shell Carbon,GAC,KDF,SedimentCarbon Block,Coconut Shell Carbon,Sediment,Thin Film Composite MembraneAlkaline or Calcite,Carbon Block,Coconut Shell Carbon,Sediment,Thin Film Composite Membrane
Ease of InstallDrilling RequiredEasy InstallEasy InstallEasy Install
Number of filters included4333
Number of Stages4 Stage3 Stage3 Stage3 Stage
IncludesFaucet,Hardware,Installation kitFaucet,Filter,Installation kitFaucet,Filter,Installation kitFaucet,Filter,Installation kit
Replacement Filter TypeReverse Osmosis Replacement FiltersUnder Sink Replacement FiltersUnder Sink Replacement FiltersUnder Sink Replacement Filters
Application TypeWater TreatmentFood Service,Office,RV,Water Treatment,Well WaterWater TreatmentWater Treatment
View ProductView ProductView ProductView Product



Fitting size (in.)0.25Product Depth (in.)17.5 in
Product Height (in.)16.25 inProduct Width (in.)5.12 in


Application TypeFood Service,Office,RV,Water Treatment,Well WaterBacteria Reduction (%)0
Chlorine reduction (%)99Color/FinishRO w/o Alkaline
Contaminants FilteredLead, Chlorine, Copper, Fluoride, IronCopper Reduction (%)97
Ease of InstallEasy InstallFeaturesAutomatic shutoff,Indicator light(s)
Filtration MethodActivated Carbon,CTO,Carbon Block,Coconut Shell Carbon,GAC,KDF,SedimentFitting styleQuick connect
Fluoride Reduction (%)94House Hold Size8+ people
IncludesFaucet,Filter,Installation kitIndoor/OutdoorIndoor
Iron Reduction (%)98Lead reduction (%)98
Maximum feed water pressure (psi)70Maximum feed water temperature (F)100
Maximum filtered water flow (gallons per min.)0.4Minimum feed water pressure (psi)15
Minimum feed water temperature (F)41Number of filters included3
Number of Stages3 StagePack Size1
Product Weight (lb.)21 lbReplacement Filter TypeUnder Sink Replacement Filters
Returnable90-DayWater Filtration System TypeReverse Osmosis

Warranty / Certifications

Certifications and ListingsNo Certifications or ListingsManufacturer Warranty1-Year Manufacturer Warranty

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Customer Reviews

  • 4.4
    out of 72 reviews
  • 87%recommend this product
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Showing 1-10 of 72 reviews
This made us enjoy drinking water straight from the faucet.
The continuous rise in water costs has forced my husband to install this water filtration system. Due to the cost and maintenance of the whole house system, we opted for the under-sink system. After watching videos and reading several positive reviews, we decided to try the I spring tankless Reverse Osmosis with Alkaline. We like that it would not take a lot of space in my under sink apart from the price being more economical than the other brands. We only have had this for about two weeks. So far, we have not encountered any problems with the machine itself, such as leaks or something like that. My husband had no problem installing it as he had already watched the YouTube videos before purchasing it. Initially, our family was reluctant to drink the water as we had been consuming bottled water for several years. I bought the unit with an alkaline filter, which I guess makes the water tastes different-somewhat, rough, and bitter. I contacted the support center, which replied promptly. Francis, who assisted me, was very professional and helpful. He replied that it would take at least two weeks to get used to the water taste. He also recommended replacing the alkaline filter with non-alkaline. I told him that I was willing to try his recommendation. The replacement filters were sent and received at no cost after a couple of days. With the new filter, the water tastes better. My family and indoor plants now enjoy the water from the faucet. In addition, we now worry less about the increasing bottled water price and the numerous dangers of drinking bottled water.
    • Recommended
    Best unit with the best customer support
    I researched tankless RO systems extensively. Then decided to call the top 4. Three had real people to talk to. But, hands down iSpring was the best. A giant call-out to Sean for his time and support to make sure I had what I needed for my install. The unit works great. Know when you buy that all tankless units have to pump water. I was concerned about how loud this one would be. It's barely noticeable, so super happy there. I also got the CA filter to enhance the PH and remineralize the water. This was a critically important issue and iSpring had an answer. The PH is now 8.4. I would to like be able to test the mineral content. I think that is more a taste issue and the water does taste pretty good. For the DIYers, the unit comes with all you need. I did purchase an adapter to drain directly into the disposal which saved me from drilling into the pipe. I highly recommend this.
      • Recommended
      1 found this review helpful
      Better Than Bottled Water
      Easy to install. Fits and looks great under the sink. Nick from Ispring answered all our questions. Thank you! We love our system.
        • Recommended
        1 found this review helpful
        Great Product!
        Installing this filter made a huge difference in terms of improving the purity and quality of water. It improved the TDS value from 35 all the way down to 2! I like how easy it is to check the quality of the water using the smart faucet. It's proven to be very easy to use and efficient. It doesn't take up much room so it's easy to fit in smaller spaces. Highly recommend.
          • Recommended
          3 found this review helpful
          What a great product this is over the conventional Osmosis systems with the tank. Super easy to i...
          What a great product this is over the conventional Osmosis systems with the tank. Super easy to install as the directions are abundantly clear and complete. Functions perfectly. Filters are easy to replace. Anyone can install and operate this system. When you open the faucet to get water, the filter's pump activates, but it is quiet and stops when you close the faucet. I much prefer this to the constant trickle noise of the tank filters. The single unit takes up much less space under the sink and all the hoses are in a position where it is easy to see them and ensure all is working properly. The best part of iSpring products is the tech support. The tech support rep very patiently and expertly answered all my many questions prior to purchase. After purchase, he promptly sent me a small clip for a water line that I managed to misplace when I installed the system. Note too that iSpring has spare parts that will allow you to fix anything that breaks and the prices are reasonable. I will put RO500s in my kids' homes based on the great tech support and after sale support they offer. Thanks for making a great product and for caring about your customers. Thanks to Home Depot too for making good products available.
            • Recommended
            6 found this review helpful
            Space saving water filtration system with great customer service
            I purchased this iSpring RO500 last September. It was easy to install, compact under my sink, very quiet and convenient to use. Last month, we had a boil-your-water warning in Houston due to the winter damage to city water plant. I felt much relieved to boil filtered water than untreated tap water. Shortly after that the CF filter on the unit indicate needs to replace. That is 6 months after installation instead of 1 year as said. I guess the CF filter as the first guard must have done a good job filtering away the dirty water during the freezing period. But what happened next almost drove me crazy. I searched everywhere online to find filters, but it showed out of stock everywhere. So I called iSpring to ask for help. The service guy named Nick got my call. Nick was super nice. He explained to me about COVID impact on supplies, and offered to locate a CF filter somewhere to help me out of this urgent need. I'm grateful for Nick's help, and now just waiting for the delivery.
              • Recommended
              4 found this review helpful
              easy to install, well packaged, and good build quality!
              Got it withing 4 days from Home Depot.Very well packaged, easy to install. Took about an hour from start to finish. The hardest part was drilling a 1 inch hole for the faucet on my steel sink. Love the on screen TDS readout. Finally, clean drinking water for my whole family!
                • Recommended
                2 found this review helpful
                excellent quality
                I did the research for the tankless RO systems in the market and end up with Ispring due to their excellent customer service. Before purchase, I called them several times and ask a bunch of technical questions. Adam, from Ispring, was very knowledgeable and professional and helped me to select the right RO systems. Also, I had some concerns regarding my existing water chiller under the sink and Adam guided me to install the RO system correctly. Also, I wanted to mention that the installation was very simple with the good user manual that came with the unit.
                  • Recommended
                  6 found this review helpful
                  This product is the new level of reverse osmosis. It’s saves space under the sink and It looks gr...
                  This product is the new level of reverse osmosis. It’s saves space under the sink and It looks great. (Picture attached) I had old reverse osmosis with storage tank before.It was taking to much space and the water inside the tank, when I emptied it it was nasty. I don’t know how long that water been stored inside the tank. Tank less is the new technology, I just installed a tankless water heater (never run out of hot water) and now a tank less drinking water (will never run out of fresh filtered water) Also the customer service is exceptional, special mention to Francis S. The customer service follow up right away after I registered the product. Make sure if I have any issues or concern. Highly recommend the product and the brand ISpring.
                    • Recommended
                    5 found this review helpful
                    Great Customer Service
                    We just had this system installed and very happy with how much space we gained under the sink. Our old system was 3 times larger with a big water holding tank...a dinosaur. I had a question about the digital numbers on the faucet screen and talked to Nick in Customer Service. At 6-13, he explained this was a very low particle readout, so the system was working great. Thank you, Nick, for educating us! Our plumber recommended this system and says it's the top-of-the-line in RO systems...very popular in our area of rural Virginia. We feel this was a great choice all around.
                      • Recommended
                      4 found this review helpful
                      Showing 1-10 of 72 reviews