this looks about right; turning the temp down at midday and back at 6pm ; I wish I had some idea of how much energy it's going to save; it's a #TRV altering water flow - so not gas flow directly to the boiler; so there's a lot of indirection; still it's got to save some - right?
(All by the magic of #python bindings on #openzwave with #grafana graphing )

I've just replaced HomeAssistant by a small #python script using the #openzwave bindings (based on it's examples); all I'm doing is graphing one TRV, but it feels easy to add actions to that script. The data is going into my existing carbon+#grafana graphing, so once the data is forcibly extracted from Z-Wave it's pretty easy to stuff it into the graphs.
HA has a bug that means it's hard to get it to graph all of the TRV's data (rather than just temp) and it's easy from the raw python.