Grundfos Pumps UP15-18B5

Grundfos Pumps UP15-18B5 is a compact 115V circulator pump designed for reliable hot water and hydronic heating in residential systems. This 1/25 HP, 1-speed unit provides steady flow for radiators, radiant floors, and indirect hot water heaters. The bronze-brz housing and 1/2" sweat-mount connections ensure durability and easy, sweat-solder installation in tight spaces.

Designed for easy installation in tight spaces, the UP15-18B5 suits standard hydronic systems and helps reduce energy use through efficient, reliable circulation.

Ideal for residential boilers, radiant floor systems, and zoned heating, the UP15-18B5 delivers dependable circulation, energy-efficient operation, and quiet performance. It fits standard 1/2" piping and is compatible with common hydronic setups.

• 115V power supply for standard home electricals
• 1/25 HP motor with a single speed for consistent flow
• Bronze/brz housing for lasting durability
• 1/2" sweat-mount connections for fast, solder-based installation
• Compact design that fits tight spaces in residential systems

Upgrade your hydronic heating or hot water circulation with this dependable Grundfos UP15-18B5 circulator, engineered for longevity and steady performance.