vaillant ecotec plus 831

  1. C

    Which smart thermostat for Vaillant Ecotec 831 plus?

    I’ll try to keep this as short as possible! Basically the timer has died on my Ecotec plus 831 combi and rather than just replace it with similar I was thinking now maybe the time to go smart and get something that can help my heating system run more economically as we’re off grid so run off...
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