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High-efficiency variable-speed circulator pump for boiler or heat pump systems, offering multiple control modes with low power consumption.
Heats my home nicely and economically. The cold weather does not seem to affect the pump. Overall I'm very happy with the system. The techs have been very helpful whenever I have had questions regarding installation, etc.
Reliable Heating in Cold Weather
Economical performance that isn't affected by low temperatures.
Pump High Efficiency 1"
Powered by a permanent magnet ECM motor that can reduce electricity use by up to 85 percent while maintaining an EEI of 0.20 or lower.
Supports Auto, Proportional Pressure, Constant Pressure, Constant Speed, and Night Setback modes for adaptable hydronic performance.
The built-in LED display shows live operating data including watts, flow rate, and motor speed for fast system checks.
Built with a compact pump body and 1 inch NPT stainless steel flange unions for long-term durability in demanding HVAC systems.
Accepts an external PWM control signal for tighter integration with advanced boiler, heat pump, and hydronic control strategies.
Its small footprint and plug-and-play form factor simplify installation in tight spaces across boilers and HVAC mechanical rooms.
Electronic protection features help defend the pump against locked-rotor events, dry-run conditions, and voltage faults during operation.
Two pumps can be installed in series for larger systems, expanding compatibility with higher-output Apollo, Uni, and Phoenix units.
Designed for low noise and vibration in residential comfort systems when minimum intake pressure is maintained correctly.
Supports a wide range of applications including radiant floor heating, mixed water systems, air energy circulation, and micro CHP setups.
Family-level specifications for the Pump High Efficiency 1 inch series.
| Product family | SPM-A Series, including SPM25-6-130A |
|---|---|
| Connection / size | 1 in (25 mm) inlet and outlet connections |
| Max head / flow | 6 m max head and 44 GPM max flow rate |
| Voltage / frequency | 230V, 50/60Hz |
| Power / efficiency | 4W to 65W with EEI less than or equal to 0.20 |
| Pressure / temperature limits | 10 bar max system pressure; +2C to +110C liquid temperature; 0C to +40C ambient temperature |
| Motor / control | High-efficiency ECM permanent magnet motor with external PWM control support |
| Operating modes / protection / capacity | Auto, proportional pressure, constant pressure, constant speed, and night setback; locked-rotor plus overvoltage and undervoltage protection; up to 40 kW single or 95 kW in series |
Use a family-specific bottom-tabs section later if this product needs comparison tables, grouped specs, or product-handle logic.
Download the current Pump High Efficiency 1 inch manual.
Installation and operation manual for the Pump High Efficiency 1 inch series.