3-Stage White Bottleless Water Cooler - 300 Series

Both 3-stage and 4-stage reverse osmosis (RO) systems produce high-quality filtered water, but the 4-stage system includes an additional level of purification. In a 3-stage system, water passes through a PAC sediment filter (polypropylene and carbon) that removes sand, dirt, and other suspended solids and reduces chlorine. The water then moves through the RO membrane, which removes most contaminants, including dissolved solids such as lead and arsenic. Finally, the carbon rod filter provides a final polish by removing residual impurities, further improving the taste. 

A 4-stage RO system is similar, but it adds an additional pre-carbon filter that removes chlorine, unpleasant tastes and odors, and VOCs. It also performs the final polish with a coconut carbon block filter to improve taste and odor. This post-filtration step enhances water clarity and helps eliminate any trace elements.

The main difference is the added layer of refinement. A 3-stage system is effective for most households, while a 4-stage system is ideal for those who want the cleanest, best-tasting water possible. Brio offers both systems to meet your water needs and preferences.

Maintaining your bottleless cooler is easy. Most importantly, be sure to replace filters on schedule, usually every 6–12 months, depending on usage and water quality. Brio’s filter replacement indicator (on select models) will notify you when it’s time to change them. You can also subscribe to Brio’s filter replacement service for automatic deliveries.

Unplug the cooler before cleaning and drain the reservoirs. Clean them with a food-safe sanitizer or mild vinegar solution and wipe down buttons, nozzles, and the drip tray with a damp cloth and mild soap. Remove and clean the drip tray regularly to prevent buildup, and sanitize the internal components every 6 months.

Many Brio coolers have UV sterilization or ozone self-cleaning. Activate these features as recommended for low-maintenance hygiene.

Choosing between a 2-stage and 3-stage bottleless water cooler depends on your water quality, usage, and preferences. Both provide clean, filtered water, but a 3-stage system delivers an extra level of purification for improved taste and safety.

For home use, a 2-stage bottleless water cooler is an excellent choice if you have treated municipal water and just need to remove sediment, chlorine, and odors for better-tasting water. If your home has older pipes, higher chlorine levels, or water with an odd taste or smell, you might want a 3-stage bottleless water cooler.

For offices, a 2-stage bottleless water cooler is a good choice for low-traffic areas, depending on the level of filtration you need. However, a 3-stage model may be better for multiple users since it filters more contaminants and handles higher water demand.

Brio’s 2-stage and 3-stage filtration systems are designed to improve treated municipal water by removing chlorine, sediment, and specific contaminants. However, if your water source is untreated, you’ll need extra filtration, such as reverse osmosis (RO) and UV sterilization, to make it safe for drinking.