Grundfos Pumps UPS15-55SUC CirculatorGrundfos UPS15 55SUC is a compact 115V, 1 12 HP three speed stainless steel circulator pump designed for residential hydronic heating and hot water systems. Its stainless union mount delivers durable, leak free installation and serves as a direct replacement for the UP25 64SU (catalog 52722324). This reliable circulator provides efficient flow control and quiet operation in tight spaces, making it ideal for radiant floor heating, boilers, and

It's an essential accessory for upgrading or replacing aging exhaust components

reduces startup strain on the inducer circuit

Die‑cast aluminum body

Ideal for valve assemblies across industrial automation and process control applications

offering versatile performance across applications

this replacement keeps your unit performing like new

leak-minimal connection in rugged environments

Its professional-grade construction minimizes draft losses while maximizing energy efficiency

The 11/32 inch double lead threaded connection and universal mounting simplify replacement on existing units

this flame sensor ensures proper flame detection and shutoff if a flame is not detected

Its CCW rotation and compact 5

Durability: Durable safety component for HVAC systems