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Any Tips On Changing Out a Caleffi ThermoMix Cartridge?

VelvetFoot Member Posts: 48
I'm going to try a 140F cartridge, up from my current 130.
Would anyone have any tips on doing this? Other than, make sure the water isn't hot and is depressurized (I did that once with a coolant sensor on a car-ouch).
With that car sensor thing, I was able to change it out without losing much coolant (even with the ouch).
I don't have isolation valves around this ThermoMix, but a little distance upstream and downstream.
Should I try a quick change deal?


  • hot_rod
    hot_rod Member Posts: 22,394
    If you could practice first, maybe a "quick, wet" change out would work
    Bob "hot rod" Rohr
    trainer for Caleffi NA
    Living the hydronic dream