Tecalor 8.5 Air-Water Heat Pump: Warm water - not hot in the morning

Starting with hot water at 5:00 am is actually unfavorable. On average, that is pretty much the coldest time of day, meaning it naturally takes the longest and consumes a lot of electricity. What I’m just wondering: why is the hot water ‘gone’ at 5 am at all, do you actually use it between 10 pm and 5 am?

In the settings, there should be something like "Hot water power summer/winter" somewhere, you could maybe turn up the ‘gas’ a bit more there. I think it’s set to 80% by default. If the hot water still regularly isn’t enough, as others have already said, the only help is to raise the temperature.

No, exactly not… We don’t consume any water between 10 pm and 5 am.

However, I think that the hot water has to be reheated repeatedly to maintain a "hot" temperature, right? The tank can’t store the heat at the highest temperature for an unlimited number of hours – or am I mistaken?

I will simply set the heating time earlier now and see if that helps.

Of course not an unlimited number of hours, but in 7 hours the temperature should not noticeably drop. Just a few degrees. Or do you have a hot water circulation that also runs at night?

Of course not an unlimited number of hours, but in 7 hours the temperature should not noticeably drop. Just a few degrees. Or do you have a hot water circulation that runs at night as well?

I wouldn't know that I have a hot water circulation pump.

Maybe it’s exactly those "few degrees" that are missing? I’ll just try a few things…

First, set the heating period cycle earlier and if that doesn’t help, I’ll simply increase the temperature by 2-3 degrees.

I have now taken a few more pictures of my settings and my nameplates for better analysis.

My actual hot water temperature doesn't even come close to 50 degrees - that can't be normal, can it?

According to the nameplates, my tank has a total of 268L as it seems (168 drinking water, 100 buffer).

My hot water COMFORT temperature is at 47.3 degrees (is this ultimately the "comfort temperature" or the temperature that the hot water generally has as a maximum? Should I then set this temperature to over 50°C?

Apparently, I do have a circulation pump as it seems (see pictures). The requirements for "Circulation" are "ON," so I assume that the circulation mode is also active?

I am grateful for any input for improvement!

Since my heat pump is in comfort mode, the comfort temperature should apply as the guideline, correct? This should definitely be above 50°C, right?

Yes, I would say you need to set this "comfort temperature" higher. I would set it to 51° and also set the hot water hysteresis (there must be that parameter somewhere as well) to 4°. Then the hot water should be heated up to 55° and start again at 47°.

For the circulation, you can also consider whether these times make sense for you or if you should set them shorter. It does waste quite a bit of energy.