Grundfos 59896118 UP15-18B5 Circulator Pump 1/25 HP 230V

The Grundfos UP15-18B5 is a compact, energy-efficient circulator pump designed for residential and light commercial hydronic heating systems. This reliable pump features a 1/25 horsepower motor operating at 230 volts, providing consistent circulation for radiant floor heating, baseboard systems, and domestic hot water recirculation applications.

Key Features:

• 1/25 HP permanent split capacitor motor for quiet, reliable operation
• 1/2-inch sweat (copper) connections for easy installation
• 230V single-phase power supply
• Three-speed operation allows flow rate adjustment to match system requirements
• Cast iron construction with stainless steel shaft for durability and corrosion resistance
• Maintenance-free operation with permanently lubricated bearings
• Compact design fits into tight spaces
• Built-in thermal overload protection prevents motor damage

The UP15-18B5 delivers maximum performance of 18 feet of head and is ideal for closed-loop hydronic systems up to 2,500 square feet. Its whisper-quiet operation and proven reliability make it a trusted choice for HVAC professionals and homeowners alike.