ALPHA1 is a circulator pump designed for heating systems. The pump has integrated differential-pressure control as well as constant-curve mode. The ideal choice for basic functionality needs.

The ALPHA1 is a robust and high-efficiency canned rotor circulator pump from Grundfos offering basic functionality. Perfect for new installations, the ALPHA1 is also the ideal choice for replacement of old, inefficient circulators in heating applications.

Built to provide maximum reliability throughout its long service life, the affordable ALPHA1 features integrated differential-pressure control and has durable ceramic bearings and shaft, as well as corrosion-resistant stainless-steel components.

Application for

• Commercial heating
• Domestic heating
• Industrial heating

Flexible control settings 

• Nine control settings to choose from (three each for constant curve, constant pressure and proportional pressure modes), offering flexibility in your heating application.
• Simple user interface and one-touch operation enables simple set-up, and the display shows power consumption and fault codes for easy trouble-shooting.
• The ideal choice for replacement of old and inefficient circulators.
• Robust start-up - if the rotor is blocked, the pump automatically attempts a restart, swiftly breaking up any deposits of dirt or lime, without external interference.