The Hatco 3CS2-4B Hydro-Heater is a commercial-grade undersink sanitizing sink heater designed for high-performance commercial kitchens. Built with a stainless steel front and powder-coated body, this unit ensures durability and long-term reliability. Its patented free-flow system delivers consistent, 180°F sanitizing rinse water naturally, eliminating the need for manual temperature adjustments. The low-water cut-off system provides crucial protection for internal components, making it an essential upgrade for food prep areas requiring strict sanitation compliance. Fitting 16- to 18-inch square sinks, this 4kW, 240V/3-phase unit is ideal for restaurants, hotels, and institutional kitchens where consistent sanitization is non-negotiable. The electronic temperature controller ensures precise water temperatures, while the drain outlet with clean-out caps maintains easy maintenance. With a 1-year labor and 5-year tank parts warranty, the Hatco 3CS2-4B is a smart investment for commercial operators prioritizing efficiency, safety, and compliance.