Hi Sarah. I’ve asked for this to be split into a new topic, so we can comment on your specific system.
(copied above from original topic for context)
You may be able to reduce the overall consumption by increasing the duty cycle of the heat pump, but this may come at the expense of performance, i.e. less heat being produced per kWh of electricity (known as COP).
Yes, this looks to be running reasonably well at around 3 cycles every 2 hours, which is okay. If it still cycles in colder weather (say 6C) then it might suggest the heat pump is too big for the property, or there aren’t enough radiators. You’ll want to have your TRVs on their highest settings to maximise radiator output, except for rooms that are getting too warm.
Net power of 1kW seems about right, looking at this other 8kW Samsung. In ideal conditions, it can run continuously on under 800 W of power with a flow of 35 C, producing 3 kW of heat to match the heat loss from the building. However, every house and every heating system is different, so we don’t expect them to perform identically.
I notice that the heatpump is only running between 8am and 9pm - there’s a school of thought that it’s better to keep them running for 24 hours with a couple degrees “setback” on the thermostat at night. By keeping the heat pump running “low and slow” throughout the day, it doesn’t have to work hard to get the house up to temperature.
It’s hard to infer much more about the running of a heat pump without sophisticated metering. Does the Samsung controller provide any additional insights?