How have the heat pump users among you actually set the hot water preparation? Do you let the heat pump heat hot water only once or twice a day to a higher temperature than delivered, or do you, for example, set it to 40° and have the heat pump prepare hot water on demand throughout the day?
I’m only asking because at the moment, in our case, we heat the hot water tank to 50°, although we only draw 40° (via a fresh water system), but we only let it heat once a day at a fixed time around midday (because of photovoltaics). Occasionally, the tank is empty before the next heating phase… but unfortunately, I haven’t found a suitable schedule for us yet.