The Grundfos ALPHA2 25-40 180 circulation pump offers exceptional energy efficiency with an EEI of 0.15 in a compact design. This pump features a variable power consumption ranging from 3 to 18 watts and includes an integrated flow meter for system troubleshooting and balancing. The innovative plug connection simplifies installation, and the included insulation shells help maintain thermal efficiency. Multiple operating modes provide flexibility for various heating applications: AutoAdapt automatically optimizes system performance based on heating load, Proportional pressure adjusts the pressure to changing heat demands, Constant pressure maintains pressure regardless of load, and Constant speed offers steady operation for applications with constant flow rates. The pump retains all settings during power outages, ensuring reliable operation. The connection cable is not included. This model is particularly suitable for garden irrigation systems, heating circuits with thermostatic radiator valves, and underfloor heating applications. Its compact dimensions and energy-efficient performance make it ideal for residential construction and light commercial water circulation requirements. With its proven technology and multiple configuration options, this circulation pump delivers reliable performance for various water distribution needs.