The Mayer GPA 20-5 circulation pump is a modern solution designed for efficient heat-carrier circulation in residential heating and cooling systems. The model is built around a high-tech ECM motor that combines low energy consumption, precise electronic control, and long service life. With its A-class energy efficiency rating, the pump significantly reduces heating system operating costs while placing minimal load on the electrical network.
The GPA 20-5 design supports use in domestic systems with variable heat-carrier flow, nighttime power reduction, seasonal load adjustments, and variable supply temperature. Intelligent automation ensures optimal pump operation depending on system pressure and hydraulic resistance, automatically adjusting modes to maximize efficiency.
The durable cast-iron housing is protected against corrosion, and the technopolymer impeller is resistant to temperature fluctuations and aggressive heat-carrier effects. The LED display provides visual information about pump status, power consumption, and selected operating modes, simplifying maintenance.
A working temperature range from +2 to +110°C allows the pump to be used in radiator heating, underfloor heating, domestic cooling circuits, and small engineering networks. The pump operates extremely quietly — thanks to ECM technology, vibrations are minimized, making the model ideal for installation in living spaces.
| Distance between axes, mm: | 180 |
| Maximum pumping height, m: | 5 |
| Water consumption, m³/h: | 4,0 |
| Connection type, mm: | 20 |
| Power, W: | 32 |
| Max. liquid temperature, °C: | +110 |
| Weight, kg: | 5,6 |
| Installation method: | Vertical, horizontal |
| Color: | Red |
| Coutry of brand: | Germany |
| Inner tank coating: | Cast Iron |
| Protection type: | IP42 |
| The length of the power cable,m: | 1,0 |
| Maximum working pressure, bar: | 10 |