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cosy geo

  1. S

    Wiring to replace Geo Cosy with Hive Active Heating

    Hi all Desperate to replace the pretty rubbish Geo Cosy system that we got for free a few years ago when we switched our electric supplier with a nice new Hive system. I’m in a better place than most for this as we had a Worcester wireless thermostat originally and the engineer had to...
  2. J

    Replace a Cosy Geo Heating switch with a Nest Heat link

    Hi, Apologies if this is in the wrong place. We’ve recently moved into a house that has a cosy geo installed which we want to replace with a nest system. Having had a look at the current installation I think I need to only use the two wires currently in the T1 box? If I’ve understood the...
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