Circle Reverse Osmosis Under Counter Water Filter System

$349.99

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Brondell's Circle Reverse Osmosis Water Filtration System utilizes patented new technology to eliminate back-pressure, making it up to 10 times more efficient than current conventional RO systems.

Learn More About Circle's Efficiency

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  Eco-Friendly

Products engineered for the environment

  Gold Seal Certified Filtration

Certified by WQA for trusted performance

Details
A More Efficient RO System
Innovative Technology Saves Water & Money

This sleek, high-capacity system contains patented water-saving technology that makes the Circle up to 10 times more efficient than conventional reverse osmosis systems. Over the life of the product, the Circle pays for itself in water savings compared to traditional RO.

Its unique flexible reservoir and patented Smart Valve substantially reduce wastewater by eliminating back pressure—which is the biggest source of waste in RO systems.

The Circle's surprisingly small footprint leaves plenty of space under your counter and is easy to install and maintain. The Circle is an elegant, efficient reverse osmosis system for the modern, sustainable home

  • What the Circle Filters
    • Lead
    • Chlorine
    • Fluoride
    • Hexavalent
    • Chromium
    • Trivalent
    • Chromium
    • Arsenic
    • Barium
    • Radium
    • Cadmium
    • Copper
    • Cysts
    • and more!
Smart Valve

This patented technology eliminates back pressure to make the Circle up to 10 times more efficient than traditional reverse osmosis systems, saving water and money.

Flexible Reservoir

Working together with the Smart Valve, this system expands and contracts to provide consistent flow rates, improving overall efficiency without using pumps or electricity.

Auto RO Filter Flushing

The system automatically flushes the RO membrane, significantly extending the life of the filter to two years—so you don't have to buy filters as often!

Four-Stage Filtration

Four separate filters work together to deliver maximum filtration. The Circle is WQA Gold Seal certified for trusted performance.

Rapid Refill Rate

In addition to saving water and money, the Circle's unique technology allows the system to refill in about half the time of a traditional RO system.

Space-Saving Compact Design

The reservoir and filters are contained within a single, sleek case, taking up less space under your counter.

Designer Faucet

This elegant chrome faucet includes an integrated LED filter change indicator that gently reminds you to replace your filters.

Why are other RO systems so wasteful?

In most households, conventional RO systems consistently operate at their lowest level of efficiency, wasting up to 24 gallons of water for every gallon of filtered water produced. How? We all drink water one glass at a time. When a glass of water is drawn from a traditional RO system, the system will then try to 'top off' the reservoir. Because significant back pressure has built up in the almost-full reservoir, it is difficult for water to enter. Instead, gallons of water are simply pushed back down the drain before a single gallon is produced for drinking. Thanks to the Circle's innovative features, this back pressure is no longer an issue—which is why the Circle is up to 10 times more efficient!

More About Reverse Osmosis and the Circle RO

Reverse osmosis (RO) systems today are bulky, difficult to install, and many require electricity and pumps to operate. Most importantly, conventional RO systems are extremely inefficient, wasting up to 24 gallons of water for every gallon of drinkable water!

  • Patented New Technology

    Brondell's Circle Reverse Osmosis Water Filtration System utilizes patented new technology to eliminate back-pressure, making it up to 10 times more efficient than current conventional RO systems. Additionally, the Circle RO Water Filter eliminates any need for electricity by integrating the tank and filters. Brondell's Circle is an all-in-one, easy-to-install complete system.

  • Smart Valve and Flexible Reservoir

    The Brondell H2O+ Circle RO Water Filter’s exclusive Smart Valve and unique circular reservoir design are the keys to its efficient design. This special technology eliminates back-pressure on the RO membrane filter, making the Circle RO Water Filter a leader in RO efficiency. The Circle RO Water Filter reduces wastewater to an average of 2.1 gallons for every gallon of drinking water – up to 10 times more efficient than many conventional RO systems currently being sold (and in some cases, even over 10 times as efficient). In addition, the Circle RO Water Filter’s refill rate is more than twice as fast as non-electric systems, and equally as fast as those with electric pumps. We’ve also simplified installation and maintenance with features such as auto-flushing, twist-and-seal filter changes, and “quick-connect” connections. The Brondell H2O+ Circle RO Water Filter delivers water savings, power savings, and space-savings - all in a beautiful, simplified design.

  • Easy Installation

    The Circle RO Water Filter easily installs under your kitchen counter, and everything needed for installation is included. This is the fastest, easiest, most elegant, and most efficient high-quality reverse osmosis system available.

  • Feature Highlights
    • Water-saving smart technology — up to 10 times more efficient than conventional RO systems
    • Designer chrome faucet with integrated LED filter change indicator (included)
    • Space-saving compact design leaves plenty of room for under-sink storage
    • Patented Smart Valve and flexible water tank delivers maximum water efficiency
    • Automatic filter flushing significantly extends the life of the RO Membrane filter (two-year RO filter)
    • Constant flow rates without pumps
    • 6L tank refills fully in under one hour
    • Certified four-stage filtration: sediment filter, pre-carbon plus filter, RO membrane filter, post carbon block filter
    • Quick-change filters – twist-and-seal filters make filter replacement a breeze
    • Non-electric design (no pumps or electricity required)
    • Certified for NSF/ANSI Standards 42, 53, 58, and 372
    • Gold Seal-certified by WQA (Water Quality Association) for trusted performance
    • One-year warranty
Four-Stage Filtration

The Circle Reverse Osmosis Water Filtration System utilizes four separate advanced water filters, dramatically reducing industrial chemicals, heavy metals, pesticides, herbicides, total dissolved solids (TDS), volatile organic compounds (VOCs), microorganisms, and bad tastes and odors. Reduce harmful chemicals like fluoride; atrazine; hexavalent & trivalent chromium; chlorobenzene; trihalomethanes; methoxychlor; endrin; 2,4-D; benzine; DBCP; pentavalent arsenic; barium; radium; cadmium; lead; and aesthetic chlorine from your tap water for a healthy home and family.

  • The Four-stage Brondell H2O+ Circle Reverse Osmosis Water Filtration System (RC100):*
    • SEDIMENT FILTER* (Stage 1): The sediment filter reduces particulate materials such as sand, rust and fine particles from the water supply. The first stage also acts as a pre-filter, protecting and extending the life of the following filters.
    • PRE-CARBON PLUS FILTER* (Stage 2): This second stage filter significantly reduces harmful VOCs, chlorine and soluble contaminants, which can damage the RO Membrane filter.
    • RO MEMBRANE FILTER** (Stage 3): The RO membrane filter works by pushing water through a semi-permeable membrane, thereby separating H2O molecules from contaminants in the tap water. The powerful RO membrane filter significantly reduces pollutants such as: heavy metals, cysts, fluoride, arsenic, industrial chemicals and more.
    • POST CARBON BLOCK FILTER* (Stage 4): As the final stage in the filtration process, the post carbon block filter further reduces any lingering water contaminants such as chlorine and volatile organic compounds (VOCs), improving the overall taste and odor of the dispensed water. *Recommended replacement is every six months.
    • **Recommended replacement is every 24 months.
  • Water Quality Association Certified
    • Brondell water filtration systems are all tested and certified by the Water Quality Association (WQA). Beware of non-certified manufacturer's filtration claims that have not been tested and approved by an authorized agency for water filtration products.
    • The RC100 is tested and certified to NSF/ANSI 42, 53 and 58 for the reduction of aesthetic chlorine, taste and odor, cyst, VOCs, fluoride, pentavalent arsenic, barium, radium 226/228, cadmium, hexavalent chromium, trivalent chromium, lead, copper, selenium and TDS as verified and substantiated by test data. The RC100 conforms to NSF/ANSI 372 for low lead compliance.*
*see performance data sheet for all WQA-certified claims Do not use with water that is microbiologically unsafe or unknown quality without adequate disinfection before or after the system.
Recommended Add-ons Additional Info
Additional Information
  • FAQs
    FAQs
    • Shipping

      I’m in the Continental US. When will I receive my order and how will it ship?

      When Flat Rate Shipping is selected upon checkout, bidets, air filters, and water filtration systems ship UPS Ground from Missouri within 1-2 business days.  Small replacement parts and accessories ship USPS Priority Mail from San Francisco within 1-2 business days.  If you need assistance with an expedited order, please call us to confirm shipping times.

      Do you offer expedited shipping?

      We can ship all of our items with UPS expedited services including Next Day, 2nd Day Air, and 3Day Select.  Real-time expedited shipping quotes are available during the checkout process or call us for assistance.

      When will I receive tracking information?

      Brondell will email you an order confirmation immediately after your order has been placed and we follow up with another email with tracking information once your order has shipped.  You can login to your account anytime to check the status of your order.

      Do you require a signature upon delivery?

      In some cases, we may need a signature at time of delivery.  If you are unavailable to sign and receive shipment after 3 attempts and the shipping carrier returns the order, you will be responsible for all restocking fees and shipping charges on products that are returned to our warehouse.

      I’m in Alaska or Hawaii. What are my shipping charges?

      Shipping charges on orders delivered outside the 48 contiguous United States and Canada are calculated on a case-by-case basis and shown during the checkout process.  Simply place your order online to get a real-time shipping quote or call us and we'll be happy to assist you.

      I’m in Canada. When will I receive my order and how will it ship?

      Brondell ships all Canadian orders within 1-2 business days out of our Toronto, Ontario warehouse and allows approximately 2-6 days for delivery.  Expedited shipping is available as an option during checkout. While many orders ship UPS Standard, in some instances your order will ship best way possible, which can include Canada Post, Purolator, etc.  If you need assistance with an expedited order, please call us to confirm shipping times.

      I’m in Canada. Is my total listed in USD or CAD?

      All costs are listed and processed in USD.

      I’m in Canada. Do I have to pay for additional duties and taxes to receive my shipment?

      The total due at checkout is your final cost and there are no additional fees.  For your convenience, Brondell ships orders directly from our warehouse in Toronto, ON to destinations within Canada. This eliminates the expensive brokerage and other fees associated with shipping across the border and speeds up shipping time significantly.  We also calculate and collect all applicable GST, PST and HST at time of checkout to make the process quick and simple. 

    • Warranty

      Do Brondell products have a warranty?

      Brondell products are backed by some of the most comprehensive warranties in the industry. Brondell warrants that all products (excluding consumable items) shall be free from defects in material and workmanship under normal use and service.

      Residential Warranties for Brondell Products
       

      Swash 100, 250, 300, 450, 550, & 900 Bidet Seats - One Year Limited Warranty

      • 100% Coverage of all parts and labor for the entire product for the first year from original date of purchase

       

      Swash 700 Bidet Seats - Two Year Limited Warranty

      • 100% Coverage of all parts and labor for the entire product for the first year from original date of purchase
      • 75% Coverage of all parts and labor for the entire product for the second year from original date of purchase

       

      Swash 800, 1000, and CL825 Bidet Seats - Three Year Limited Warranty

      • 100% Coverage of all parts and labor for the entire product for the first year from original date of purchase
      • 75% Coverage of all parts and labor for the entire product for the second year from original date of purchase
      • 50% Coverage of all parts and labor for the entire product for the third year from original date of purchase

       

      FreshSpa and PureSpa Bidet Attachment models - One Year Limited Warranty

      • 100% Coverage of all parts and labor for the entire product for the first year from original date of purchase

       

      CleanSpa, PureSpa, and SimpleSpa Bidet Sprayers & Hot/Cold Mixing Valve models - One Year Limited Warranty

      • 100% Coverage of all parts and labor for the entire product for the first year from original date of purchase

       

      LumaWarm Heated Toilet Seat models - One Year Limited Warranty

      • 100% Coverage of all parts and labor for the entire product for the first year from original date of purchase

       

      H2O+ Water Filtration Systems (Models RC100, H260, H625, and H630) - One Year Limited Warranty

      • 100% Coverage of all parts and labor for the entire product for the first year from original date of purchase

       

      H2O+ Water Filtration Pitchers (Models H10-W and H10-B) - 30-Day Warranty

      • 100% Coverage of all parts and labor for the entire product for the first 30 days from original date of purchase

       

      O2+ Air Purifiers (Models P400-W, P400-B, P300-W, P300-B - Three Year Limited Warranty

      • 100% Coverage of all defects or malfunctions of all electronic parts and labor for the entire product, excluding consumable filters for the first three years from original date of purchase

       

      Exclusions and Limitations

      1. BRONDELL warrants its products to be free from manufacturing defects under normal use and service. This warranty is extended only to the ORIGINAL PURCHASER and is not transferable if you sell or otherwise transfer the product.

      2. BRONDELL's obligations under this warranty are limited to repairs or replacement, at BRONDELL's option, of products or parts found to be defective, provided that such products were properly installed and used in accordance with instructions. BRONDELL reserves the right to make such inspections as may be necessary in order to determine the cause of the defect. BRONDELL will not charge for labor or parts in connection with warranty repairs for the first full year from date of purchase on all products except those that may be subject to commercial use limitations.

      3. BRONDELL is not responsible for the cost of removal, return (shipping) and/or reinstallation of products. This warranty does NOT apply to:

      • Any and all replacement filters or consumable parts.
      • Damage or loss which occurs during shipment.
      • Damage of loss sustained through any natural or man-made causes beyond the control of BRONDELL, including but not limited to fire, earthquake, floods, etc.
      • Damage or loss resulting from sediments or foreign matter contained in a water system.
      • Damage or loss resulting from negligent or improper installation including installation of a unit in a harsh or hazardous environment.
      • Damage or loss resulting from removal, improper repair, modification of the product, or improper maintenance including damage caused by cleaning products, chlorine or chlorine related products.
      • Damage or loss resulting from electrical surges, electrical outages, lightning strikes or other acts which are not the fault of Brondell or which the Product is not specified to tolerate.
      • Damages as a result of normal "wear and tear" will not be considered defects.

       

      4. This warranty gives you specific legal rights. You may have other rights which vary from state to state.

      THIS WRITTEN WARRANTY IS THE ONLY WARRANTY MADE BY BRONDELL. REPAIR OR REPLACEMENT AS PROVIDED UNDER THIS WARRANTY SHALL BE THE EXCLUSIVE REMEDY AVAILABLE TO THE PURCHASER. BRONDELL SHALL NOT BE RESPONSIBLE FOR LOSS OF USE OF THE PRODUCT OR FOR OTHER INCIDENTAL, SPECIAL, FOR CONSEQUENTIAL DAMAGES OR EXPENSES INCURRED BY THE PURCHASER OR FOR LABOR OR OTHER COSTS DUE TO INSTALLATION OR REMOVAL OR COSTS OF REPAIRS BY OTHERS, OR FOR ANY OTHER EXPENSE NOT SPECIFICALLY STATED ABOVE. EXCEPT TO THE EXTENT PROHIBITED BY APPLICABLE LAW, ANY IMPLIED WARRANTIES, INCLUDING THAT OF MERCHANTABILITY, ARE EXPRESSLY LIMITED TO THE DURATION OF THIS WARRANTY. SOME STATES DO NOT ALLOW LIMITATIONS, SO THE ABOVE LIMITATION AND EXCLUSION MAY NOT APPLY TO YOU.


      How to Obtain Service

      To obtain repair service under this warranty, you must contact an authorized BRONDELL Service Center to obtain an RMA (Return Merchandise Authorization) number. Proof of purchase in the form of a copy of your original receipt must accompany the returned unit for the warranty to be valid. Take or ship the unit pre-paid to the closest Brondell authorized service center along with your RMA number and proof of purchase.

      To obtain your RMA number and locate the BRONDELL Service Center location nearest you,
      call 1-888-542-3355.

  • Downloads
  • Installation
    Installation

    Brondell Circle Reverse Osmosis Installation

    The all-in-one configuration makes the Circle easy to install and maintain!

     


     

    Connecting the Tubes in Your H2O+ Water Filtration System

    A Quick Tutorial on Quick Connects

  • Certifications
    Certifications

    Brondell water filtration systems are all tested and certified by the Water Quality Association (WQA). Beware of non-certified manufacturer’s filtration claims that have not been tested and approved by an authorized agency for water filtration products.

    WQA Gold Seal Logo The RC100 is tested and certified to NSF/ANSI 42, 53 and 58 for the reduction of aesthetic chlorine, taste and odor, cyst, VOCs, fluoride, pentavalent arsenic, barium, radium 226/228, cadmium, hexavalent chromium, trivalent chromium, lead, copper, selenium and TDS as verified and substantiated by test data. The RC100 conforms to NSF/ANSI 372 for low lead compliance.*

    *see performance data sheet for all WQA-certified claims
    Do not use with water that is microbiologically unsafe or unknown quality without adequate disinfection before or after the system.

  • Reviews & Questions
    Reviews & Questions
    Circle Reverse Osmosis Water Filtration System is rated 4.8 out of 5 by 11.
    Rated 5 out of 5 by from Sweet water! Literally! I bought this system 2 weeks ago and can't go back to regular tap water. The installation was quite easy even with having to drill a hole in our sink to install the tap. We drink a lot of water, so this is definitely worth every penny compared to other systems on the market. No more filling up pitchers over and over throughout the day. This system removed the strong chlorine smell and taste and made our water actually taste SWEET! Another plus is it doesn't require electricity so super savings! The only thing I'd love that would make this system even more awesome is if Brondell created a remineralization system to go along with this filtration system.
    Date published: 2018-03-09
    Rated 5 out of 5 by from Reverse Osmosis for Everyone After years of messing with a traditional multi-filter reverse osmosis I just installed the Circle Reverse Osmosis System. Following the provided instructions installation was a breeze and the water is clean and tasty. Under the sink is so clean and uncluttered compare to the old system. Knowing it is using far less water is a huge plus! I have already bragged about the Circle to friends who were complaining about working on their old systems. Thank you Brondell for a much better reverse osmosis system!
    Date published: 2019-01-12
    Rated 4 out of 5 by from Simple Installation I bought the Circle RO two weeks ago and am pleasantly surprised. The installation instructions were clear, concise and easy to follow. After completing the installation and flushing procedures, I checked the TDS, pH and waste water. All parameters were well within Brondell's claims - waste water for the last 250ml of the tank fill was 650ml, the TDS went from 98 to 6 and the pH dropped one point. The tank, while not overly large, refills so fast it is not an issue. I would not hesitate to recommend this system and will update my review after it has been in operation for a few months.
    Date published: 2015-09-25
    Rated 5 out of 5 by from Works well with 38 psi We bought one about 6 months ago, slightly unsure because our water pressure is 38 psi, so a little below the required 40. But someone at the company said it should work perfectly anyways and it does! There's no issues with the water flow and it tastes great. No problems so far. No noticeable noise either. When we first installed it it was very slow during the clear out process but once the installation was done and it was up and running it starting flowing normally and we haven't had any problems with the flow speed since.
    Date published: 2018-10-24
    Rated 5 out of 5 by from GR8 Water-Easy as 1-2-3 I have limited use of my dominant had and was concerned with how difficult installation would be. Well, I was EXTREMELY surprised at just how simple and quick it was. Having had RO systems in all of my previous home (5) this one seems to be versatile and compact. I would recommend it for tight spaces and "non-plumbers". Anyone can install this thing! (just make sure you can fit under your sink! LOL)
    Date published: 2018-08-12
    Rated 4 out of 5 by from My Review I like the quality, design and ease of installation; however, I would like for it to have a higher output. I hooked it up to my refrigerator and it has a pretty low water output even with the refrigerator filter removed.
    Date published: 2018-10-06
    Rated 5 out of 5 by from Easy installation with great tasting water Just bought and installed the Brondell Circle Reverse Osmosis. the water taste pretty good now. Installation is simple and direct. Will write another review after a month. I'm quite pleased with the product for far.
    Date published: 2018-10-26
    Rated 5 out of 5 by from Water tastes amazing! I bought this filtration system a couple of days ago. The installation was very simple and now I have great tasting water at home! No more water bottles. I highly recommend this water filtration system.
    Date published: 2018-12-24
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Circle Reverse Osmosis Water Filtration System is rated 4.8 out of 5 by 11.
Circle Reverse Osmosis Under Counter Water Filter System