Grundfos GF Variable Speed Circulator Pump

The Grundfos GF Variable Speed Circulator Pump line is a family of high-efficiency, flanged circulator pumps for residential, commercial and industrial heating and cooling systems. Each pump uses a variable speed ECM motor. The motor adjusts output to match what the system needs instead of running at a fixed speed. This helps cut energy use and keeps the system balanced.

Key Features:

• Multiple control modes: Choose proportional pressure, constant pressure, constant temperature, differential temperature, constant curve or constant flow to suit the application.
• AUTOAdapt: Adjusts pump performance to the system size and load over time.
• FLOWAdapt and FLOWLimit: Set a maximum flow so it is never exceeded. FLOWAdapt combines this with AUTOAdapt.
• Dual-pump operation: Wireless communication between two pumps supports alternating, backup and cascade operation.
• Optional Grundfos GO app connectivity: Bluetooth connection for setup, scheduling, diagnostics and performance data.
• Flanged (GF) connections: Mount to standard Grundfos GF flange patterns for straightforward installation and replacement.

Grundfos is a well-known name in pump technology. This line is designed for dependable, long-term service in hydronic heating, chilled water and cooling loops, and some models also suit domestic hot water recirculation. Variable speed control saves energy, and the adaptive modes make commissioning easier. Check each individual listing for the pump size, voltage, housing material and performance specifications.