GRANDER® Circulation Units

for heating circuits, cooling circuits and industrial process water

GRANDER® Circulation Units are suitable for the use in heating/cooling circuits and process water systems. They are available as in-line units and double-cylinder submersion units and can be installed in homes and apartments, middle-size as well as large industrial plants.


3/8", 1/2", 3/4", 1", 5/4", 6/4", 2", 2 1/2", 3", 4"

Units available:

GRANDER® Circulation Units are available in flow units and in double cylinder models.

Heating Water Revitalization:

The GRANDER® effect is clearly visible here:  dirty and often foul-smelling heating water becomes crystal clear in a short time.

Cooling Water Revitalization (Industry):

Through the implementation of GRANDER® water revitalization, stabilized process water by consistent optimization of chemical use can be achieved. 

Threaded connector with red brass nipples:

for prevention of contact corrosion.

Choosing the right unit for heating area:

For the correct unit selection, the individual situation is important. Individual counseling is done by trained GRANDER® consultant. GRANDER® Circulation Units should not be used in drinking water!

Installation in Heating Area:

The installation should be done, particularly in high temperature systems, in return flow after a possible dirt separator and to guarantee a problem-free system ventilation in a vertical pipe.

GRANDER® Circulation Units work with natural energy, without electricity or chemicals and are completely service-and maintenance-free.

Additional Info

  • Area of use: Heating systems, cooling systems and process water
  • Material:

    GRANDER® Circulation Units are manufactured in durable high quality V2A stainless steel, which ensures a long life span.  For special applications, devices (from ¾\") are available in acid resistant stainless steel V4A.

    The GRANDER® Energy Rods Circulation Double are produced in V4A stainless steel.

  • Guarantee / Warranty: 3 month return policy for a full refund of purchase price (excluding WFLX/W38)
    2 year warranty on unit installation done by an authorized installation company
  • Return policy: 3 month return policy for a full refund of purchase price (excluding WFLX/W38)


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GRANDER® Water Photo of the Month

GRANDER® Water Photo of the Month


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Dominic Maroh from 1. Football Club Cologne with Johann Grander…


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