Vaillant Arotherm Owners Thread

[Andre_K (André Kühne)]

Electricity use includes pump + standby; they’re probably subtracting that. See my reply here:

Vaillant inbuilt monitoring vs MID meters

[Screenshot_20240314-210431] My heat pump was off for a couple of hours this afternoon because it was warm but the myVaillant app still registers electrical energy input without heat output. That’s around 12W which is consistent with my Shelly measurements. So the electrical energy input that Vaillant shows also measures standby power and pumps which both don’t contribute to generated heat.