Hi @ebyard It may be worth sharing your radiator schedule, flow plan, and system design, picking up information from other threads, ur system pulling 2kW at steady state is not ideal…
Here is our 8kW unit overnight, 3 defrost and a DHW cycle
Defrost, Power, LWT, Room Temp and Outside Temp
Hope this helps?
Also check out this 8kW system as a benchmark @KnightPhoenix
https://emoncms.org/app/view?name=MyHeatpump&readkey=bfd97700dd78658dedd70ff6670b453c