I’m trying to understand why my efficiency on Weather Compensation is worse than Auto Adapt when I try it.
Here is an example.
Last night I put our 8.5kW unit into Weather Compensation mode and then this morning switched back to AA. Can be seen here Emoncms - app view.
The first part is WC and after the DHW run is AA.
You can see that the WC part cycles much more but this is only around 3 times per hour so doesn’t seem excessive and looks similar to people with other units that do WC well.
At first glance WC looks better as it is maintaining a much more steady temperature and operating at a lower flow temperature.
However with AA there are longer runs but at much higher flow temperature which should be less efficient.
However when I zoom in on this morning 0h-8h I get a COP of 3.16
Whereas in AA between 9h30 and 14h (when outdoor temp is actually lower):
