HeatPumpMonitor - DHW efficiency

Yep, common issue. Usually air in the system.
Have a look around the site so you’re armed with the right info.

heat meter location and air valves etc.

You need to get this sorted as it can screw output (and cop) data. See how the heat output drops at 03:20 there in line with lack of flow reading.

flow x dt x shc = output.
if the input values aren’t there, the output comes out screwy.

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