Description
The Grundfos MAGNA3 65-150 GF (SKU 98126852) is a premium, intelligent variable-speed circulator pump engineered for demanding commercial and industrial hydronic heating and cooling systems. Featuring Grundfos’ advanced ECM (electronically commutated motor) technology, the MAGNA3 automatically adjusts its speed and output to match real-time system demand, delivering exceptional energy savings and precise flow control across a wide range of operating conditions.
Built with a cast iron (CI) volute body, this pump is designed for durability and long service life in closed-loop hydronic systems. The 208-230V single-phase power supply makes it compatible with standard North American electrical infrastructure, while the GF (Grundfos Flange) connection ensures straightforward integration into existing pipework.
Key Features
- Intelligent variable-speed ECM motor for maximum energy efficiency
- Cast iron (CI) pump body for robust, long-lasting performance
- 208-230V power supply — compatible with standard North American electrical systems
- Grundfos Flange (GF) connection for easy installation and serviceability
- Multiple control modes: proportional pressure, constant pressure, constant curve, and auto-adapt
- Integrated frequency converter eliminates the need for an external VFD
- Built-in alarm and status indicators for simplified diagnostics
- Suitable for closed-loop hydronic heating, cooling, and district energy applications
- Compatible with Grundfos GO remote app for wireless monitoring and control
Product Specifications
- SKU: 98126852
- Model: MAGNA3 65-150 GF
- Voltage: 208-230V
- Body Material: Cast Iron (CI)
- Connection Type: Grundfos Flange (GF)
- Motor Type: Variable-speed ECM (wet-rotor)
- Application: Commercial/Industrial Hydronic Systems
Why Choose the Grundfos MAGNA3?
The MAGNA3 series is globally recognized as one of the most energy-efficient circulator pumps available. Its Auto Adapt function continuously optimizes pump performance to match actual system load, reducing energy consumption compared to fixed-speed alternatives. The intuitive control panel and compatibility with the Grundfos GO remote interface make commissioning, monitoring, and troubleshooting fast and straightforward — minimizing downtime and labor costs.
For hydronic professionals seeking a reliable, intelligent, and energy-saving circulator solution, the Grundfos MAGNA3 65-150 GF is an industry-leading choice.









