5000 GPD Comm RO

Scaling up to serious purified water output, the Nelsen 5000 GPD Commercial Reverse Osmosis system is built for businesses and facilities that need a dependable, high-volume supply of low-TDS water. Producing approximately 5,000 gallons per day from two 4 inch by 40 inch membranes, this floor-stand unit anchors many commercial water treatment rooms where consistent quality and throughput are non-negotiable.

Dual-Membrane 440 Series Performance

This system uses the 440 series platform with two large-diameter 4x40 membranes working in tandem to reject dissolved solids, salts, and a broad range of contaminants. Reverse osmosis drives pressurized feed water across the semipermeable membrane surface, sending purified permeate forward while concentrate carries rejected impurities to drain. The two-membrane arrangement increases both production rate and recovery compared with single-membrane units, making it well matched to mid-volume commercial demand.

• Roughly 5,000 gallons per day of purified water output
• Two 4 inch by 40 inch membranes on the 440 series platform
• Floor-stand frame for stable freestanding installation
• Ships at approximately 149 pounds as a complete system
• Designed for mid-volume commercial purification
• Produces consistent low-TDS permeate for demanding uses

A system of this capacity serves applications such as restaurants and food production, car washes, greenhouses, humidification, boiler and cooling tower makeup, and bottling or beverage operations where water chemistry shapes the final product. Reliable RO at this volume protects downstream equipment from scale, reduces spotting and residue, and supports processes that depend on purified feed water to perform correctly day after day.

To keep production and rejection rates strong, the system should be supported by proper pretreatment, including sediment removal and dechlorination, since chlorine can damage thin-film membranes over time. Feed water hardness, temperature, and pressure all influence performance, so a water analysis before installation helps set realistic expectations and informs pretreatment design. With routine prefilter changes and periodic membrane monitoring, the Nelsen 5000 GPD floor-stand RO provides the steady, high-purity output that growing commercial operations rely on, delivering a strong balance of capacity, footprint, and serviceability for facilities that have moved well beyond residential-scale equipment and need genuine commercial throughput. Locating the system near a suitable floor drain, a stable feed water connection, and adequate working clearance makes installation and ongoing service straightforward, while keeping spare prefilters on hand ensures the unit can be maintained promptly without waiting on parts during a busy production week.