Brondell RF-20 Circle Filter Replacement — 6-Month Under-Sink RO System

Overview

The Brondell RF-20 Water Filter Replacement is crafted for the Circle Under-Sink Water Filter system. It’s designed to refresh every day-use water with a practical six‑month lifespan under typical household conditions. Installation is straightforward, so you can keep your water tasting clean without a heavy update to your kitchen setup. This replacement cartridge supports a smoother, crisper water experience, making everyday drinks, cooking, and quick refreshes more enjoyable.

How it works

The RF-20 blends sediment capture, carbon filtration, and a reverse osmosis (RO) process to refine water in multiple stages. A sediment layer acts as an early barrier against rust, sand, and particulates. A carbon block helps reduce VOCs and chlorine, contributing to a clearer appearance and a more neutral taste. The RO membrane handles finer filtration, while a carbon post-filter provides a final polish to reduce lingering odors and tastes.

• Replacement filter designed specifically for the Brondell Circle Under-Sink Water Filter, compatible with the Circle RO system.
• Three-stage carbon filtration plus RO membrane may improve clarity and water taste by reducing common impurities.
• Sediment pre-filter minimizes rust, sand, and particulates; carbon pre-filter reduces VOCs and chlorine.
• Carbon post-filter targets lingering contaminants and helps reduce chlorine taste and smell.

User-friendly maintenance

Swap filters with a quick DIY twist-and-seal action. The built-in change indicator helps you plan maintenance, and the replacement battery is included to get you started right away. With regular use, you can expect consistent filtration performance over the six-month window.

• Easy twist-and-seal installation for a hassle-free replacement.
• Change indicator with battery included keeps you on track without guesswork.
• Six-month filter life offers a practical maintenance cadence for many households.

Sustainability and brand approach

Brondell values resource stewardship across its hygiene and filtration products. From water-saving fixtures to efficient air and water devices, the brand aims to support sustainable living while delivering practical filtration improvements for everyday use.