Grundfos ALPHA2 GO is an intelligent, energy-efficient, and reliable circulation pump with speed control, designed for both heating and cooling systems. It allows easy replacement of standalone pumps as well as integrated Grundfos UPM3/UPM4 models in boilers. Thanks to the AUTOADAPT mode, air venting function, and connection with the Grundfos GO app, it offers maximum comfort, energy savings, and hassle-free installation.

Construction

• Permanent magnet motor with speed control
• Robust start for impeller unblocking
• New connector for easy power supply
• Compact body suitable for boilers and standalone installation

Functions

• Modes: AUTOADAPT, proportional, constant pressure
• Air detection and automatic venting
• Dry-running protection
• Display with current consumption, flow rate, and head height

Usage

• Heating with radiators and underfloor heating
• Cooling circuits
• Replacement for UPM3 / UPM4 and UPS pumps
• Systems with and without TRV

ALPHA2 GO offers quiet operation below 25 dB(A), top efficiency (EEI ≤ 0.20), and extended temperature resistance up to 110 °C. It is ideal for both modernisations and new installations.

Can be used for:

ALPHA2 GO is a replacement for both integrated and standalone circulation pumps, suitable for heating and cooling systems with radiators, underfloor heating, or boiler circuits. Thanks to the setup guide, commissioning is very simple.

Smart replacement: The Grundfos GO Replace app allows precise replacement of older pumps. It suggests settings and operating mode based on the system parameters entered.

Modern installation: The improved connector allows easy electrical connection without tools. Available in lengths of 130 or 180 mm, with connections from G1 to G2 (depending on the model).

Grundfos GO Replace App

Grundfos GO Replace is a free mobile app that helps plumbers and users quickly and correctly replace old circulation pumps of the UPS or UPM3/UPM4 type. Simply enter the details of the original pump (or scan the label) and the app will recommend a suitable replacement including the exact settings for the ALPHA2 GO pump.

• Comparison of old and new models
• Proposal of optimal operating mode
• Online and offline use
• Available for Android and iOS