The Grundfos UPS4 GO 25-65 130 (220-240 V) is a high-efficiency circulator pump designed for central heating and hot water circulation in residential and light commercial systems. It combines reliable performance with energy-saving technology and user-friendly features for installation and commissioning.

Function & Purpose

This pump circulates heated water around the boiler and distribution circuit (radiators or underfloor heating) to ensure even heat delivery throughout the system. The “25-65-130” designation refers to the pump size and performance:

• 25 mm nominal pipe connection diameter

• 65 kPa maximum head (pressure the pump can generate)

• 130 mm overall length of the pump housing

The pump’s electronically controlled motor and multiple speed settings allow it to adapt flow based on system demand, improving efficiency and reducing energy use compared with older fixed-speed pumps.

Compatibility

The UPS4 GO 25-65 130 is compatible with most domestic central heating systems, including combi, system, and conventional boilers. It fits standard 25 mm (DN25) pipework and integrates with typical system controls such as room thermostats, programmers, and smart heating controllers. The 220-240 V supply means it connects directly to standard UK mains wiring.

Ideal Applications

This circulator pump is ideal for:
Homes and light commercial properties requiring reliable circulation of heating water
Replacement of older, less efficient pumps in existing central heating systems
New installations where energy efficiency and quiet operation are priorities
Systems with multiple heating circuits, radiators, or underfloor zones needing balanced flow

The UPS4 GO’s combination of efficiency, adaptability, and ease of use makes it a strong choice for modern heating systems, helping ensure comfortable, evenly distributed heat while lowering energy consumption.