Getting the best possible overall efficiency out of your pump makes financial sense. The narrow interval between CR pump sizes allows you to eliminate the efficiency drop associated with over-dimensioned pumps.

Extremely small margins decide the final efficiency level of the pumps. The Grundfos hydraulic engineering teams have carried out painstaking research into fluid dynamics to break new ground and find new ways to improve the CR. There is a 10% increase in pump efficiency. This translates into a power reduction of 15-20% for the CR pumps. When your pumps are in operation many hours a day, such improvements provide substantial savings - year in and year out.

If you want to know more, download the leaflet
> Grundfos CR connections