Replace Grundfos circulator or change cartridge??

Discussion in 'HVAC Heating & Cooling' started by ballvalve, Nov 20, 2011.

  1. ballvalve

    ballvalve General Engineering Contractor

    Dec 28, 2009
    "retired" and still building and troubleshooting
    northfork, california
    My radiant heat high head 26-96f Grundfos is about 12 years old and I am getting some vibration. Bearings getting tired.

    I can get an eqiv. taco for about 215$ or get a new Grundfos cartridge for 120$. I know if the stator is scored, the pump is shot, but in no mood to take it apart without a ready replacement. Still pumping fine.

    Opinions? Check amp draw to see if over specs would determine bad stator?

    They can be had for about $180 at other sites.
    Last edited: Nov 20, 2011
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