Product details
The Grundfos Alpha 2 is a highly efficient circulating pump specifically designed for heating applications. It utilizes a permanent magnet motor with ECM technology, allowing for electronic power adjustment. This is achieved through stepless speed variation, ensuring optimal adaptation to the respective operating conditions. The pump is equipped with an AutoAdapt function that automatically selects the most efficient operating mode, as well as a night setback function that reduces energy consumption during periods of low demand. With a maximum head of 4 meters and a flow rate of up to 1.5 m³/h, the Alpha 2 is suitable for various heating applications. The pump is robustly constructed and offers high energy efficiency with an energy efficiency index (EEI) of 0.15. It is designed for continuous operation at temperatures ranging from 2 to 110 degrees Celsius and meets the requirements of insulation class F according to IEC.
- Energy efficiency index (EEI) of 0.15 for low energy consumption
- AutoAdapt function for automatic adjustment of operating mode
- Night setback function to reduce energy consumption
- Stepless speed control for optimal performance
- Robust construction with cast iron housing for durability.
Maximum flow rate | 25 l/min |
Power | 18 W |
Conveyor height | 4 m |
Max. Delivery pressure | 10 bar |
Item number | 21847018 |
Manufacturer | Grundfos |
Category | Water pumps |
Manufacturer no. | 99260497 |
Release date | 23.8.2022 |
pump type | Flow pump |
Power | 18 W |
Conveyor height | 4 m |
Maximum flow rate | 25 l/min |
Max. Delivery pressure | 10 bar |
Protection type (IP code) | IP44 |
Power supply | Electrical connection |
Country of origin | Denmark |
CO₂-Emission | |
Climate contribution |
Length | 19.70 cm |
Width | 11.40 cm |
Height | 16.20 cm |
Weight | 2.17 kg |
Length | 20 cm |
Width | 16 cm |
Height | 11 cm |
Weight | 2.15 kg |
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Reviews & Ratings
Warranty score
How often does a product of this brand in the «Water pumps» category have a defect within the first 24 months?
Source: Digitec Galaxus- 2.Toolcraft0.4 %
- 3.Intex0.6 %
- 4.Grundfos0.7 %
- 5.wolfcraft0.8 %
- 6.Metabo0.9 %
Warranty case duration
How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?
Source: Digitec Galaxus- GrundfosNot enough data
- 1.Kärcher0 days
- 2.Einhell1 day
- 3.Gardena3 days
- AL-KONot enough data
Return rate
How often is a product of this brand in the «Water pumps» category returned?
Source: Digitec Galaxus- 10.Gardena2.9 %
- 11.Kärcher3.6 %
- 12.Makita3.8 %
- 13.Toolcraft4 %
- 14.Grundfos5 %