Discover the Brondell Open-Box Capella, a premium under-sink reverse osmosis system that delivers certified purity and exceptional efficiency right from your tap. This advanced filtration solution is backed by the Water Quality Association Gold Seal, rigorously tested to NSF/ANSI standards 42, 53, 58, 401, and NSF/ANSI/CAN 372. Trust that your family’s water is free from over 86 harmful contaminants—including microplastics, heavy metals, chlorine, pharmaceuticals, and industrial chemicals.
Experience the power of a 3-stage filtration process. The first stage uses an activated carbon pre-filter to capture sand, rust, and sediment. Next, the reverse osmosis membrane tackles known and emerging contaminants. Finally, a carbon block filter polishes the water, removing lingering odors, VOCs, and microplastics. With a 300-gallon system capacity, you’ll enjoy clean, great-tasting water day after day.
What sets the Capella apart is its eco-friendly design. Featuring patented water-saving technology, this system achieves an industry-leading 1:1 clean-to-wastewater ratio—up to 20 times more efficient than traditional RO systems. You save water without sacrificing performance, making it a smart choice for your home and the planet.
Installation is simple and DIY-friendly. The Capella comes with pre-installed tubing, a quick-connect design, and a modern air gap faucet to prevent backflow. An integrated LED filter-change indicator takes the guesswork out of maintenance, so you never miss a replacement. Filters are easy to swap with a twist-and-seal design—replace carbon filters every 6 months and the membrane every 24 months.
Compact and reliable, the Capella fits neatly under your sink and includes a 3.2-gallon storage tank. It operates efficiently within a wide pressure range and comes with a 1-year limited warranty. For added convenience, Brondell offers support through Taskrabbit if you prefer professional installation.
Upgrade your home’s water quality with Brondell. Visit brondell.com today to explore the Open-Box Capella and enjoy cleaner, safer, and better-tasting water with every glass.