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Brondell H2O+ Circle RO Membrane Filter

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A Better System for Better Water

The H2O+ Circle 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. The filter is simple to replace with the easy twist and seal system. The LED filter change indicator included in the provided faucet will let you know when it is time to change the filters. Recommended RO Membrane filter replacement is every 24 months.

The Brondell H2O+ Circle RO Water Filter delivers water savings, power savings, and space savings all in a beautiful simplified design. The Circle Reverse Osmosis Water Filtration System utilizes four separate water filters dramatically reducing industrial chemicals, heavy metals, pesticides, herbicides, total dissolved solids (TDS), volatile organic compounds (VOCs), microorganisms, cysts, bad tastes, and odors. The Circle is the fastest, most elegant, and efficient high-quality reverse osmosis system available for a healthy home and family.


  • Stage three of the four-stage filtration system
  • Easy twist and seal filter replacement
  • LED filter change indicator battery included
  • Filter lasts 24 months
  • Gold Seal certified by WQA (Water Quality Association) for trusted performance

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.

Product Highlights

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!

About Brondell

Healthy by Design. Brondell is committed to a healthier, happier you.

From the air we breathe, the water we drink, and the body we keep, Brondell prides itself on leveraging the best technologies to deliver unique, healthy home experiences for anyone looking to improve the spaces and routines they engage with every day. Their award-winning product lines for the home and office bring you the best in modern health and hygiene care, so you can breathe better, drink more purely and clean with confidence.

Be Well, Stay Well with Brondell.

From the renowned Swash electronic bidet suite to the H2O+ line of water filtration systems and O2+ air purification, people are taking notice of Brondell products and acknowledging their role in bringing technology and science together to deliver modern health and hygiene products to the home and office.

Brondell's filtration systems, available in countertop systems and under-counter reverse osmosis (RO) water filter systems, can help ensure the water in your home is pure and delicious.

Brondell products hold several certifications, including by Underwriters Laboratories (UL) and by IAPMO R&T to qualify for cUPC (Universal Plumbing Code).

Brondell is committed to you & your family's wellness!

Compatible Product

Brondell H2O+ Circle RC100 Reverse Osmosis Undercounter Water Filtration System