- Max flow
- 4 m³/h
- Head max
- 8 m
- Liquid temperature
- 0 .. 95 °C
- p max
- 10 bar
The universal upgrade and replacement pump
The ALPHA1 L is a universal replacement and upgrade circulator pump. It can replace most old Grundfos circulators in appliances – such as boilers – and is a convenient and reliable option for replacing thousands of old inefficient pumps currently in operation.
With its compact design, simple connection to boiler signal cables (PWM) and tolerance for higher ambient temperatures, the ALPHA1 L fits seamlessly in the majority of boilers equipped with Grundfos pumps, regardless of the boiler brand. This makes it easy to replace broken or inefficient pumps, without the need for excess spares.
See how customers benefit from this product
When Grundfos is a part of the solution, you get reduced energy consumption, increased comfort and unsurpassed operational reliability. Read our customers' own stories about how they benefit from the Grundfos approach to intelligence, water and energy.
Become an expert in just a few clicks
Save time in your daily work by improving your skills, your know-how and your business with the online training platform ECADEMY.
Click on a course below to start your training now.
Interested in improving your product knowledge?
Find out about the latest studies of pumps and systems, where to use Grundfos solutions and how to achieve the best performance, or search Grundfos research & insights for specific learning materials, articles, white papers, videos and much more that benefit your solution.
Get answers to your questions about this product
We have gathered frequently asked questions and their answers in one place. See the most frequently asked questions below or go to the Grundfos FAQ for a complete list of answers to questions about our products.
Become an expert in just a few clicks
Save time in your daily work by improving your skills, your know-how and your business with the online training platform ECADEMY.
Click on a course below to start your training now.
