Proper heating with underfloor heating and gas?

Greetings,

we have been living in our new detached house with approx. 165m² and 6 rooms since July this year. We have 1 child. We have underfloor heating throughout the house and a temperature controller for each room. The temperature for the rooms we use is set to 21 degrees. The rooms we do not use are only heated in protective mode at 12 degrees. We go to bed around 11 p.m. and get up at 6 a.m., and by 7:30 a.m. no one is in the house from Monday to Friday. I have set the heating so that it turns on Monday to Friday at 2:00 a.m. and off at 8:00 a.m., then on again at 12:00 p.m. and off at 11:00 p.m. The first of us comes home at 3 p.m. with the child. That has always been sufficient so far. I have already lowered the water target temperature from 60 degrees to 50 degrees without anyone feeling too cold. At 20 degrees in the rooms, it was not warm enough for my wife, but at 21 degrees everything is fine.

Do you see any possibilities for further savings? I have considered extending the non-heating time a bit longer, but underfloor heating does take its time. By the way, we heat with liquid gas.

Best regards

Manu

You can also save yourself to death...

I am not sure whether your method is efficient or if it would be more sensible, since room thermostats are available, to let the heating regulate itself in automatic mode. Logically speaking, you let the underfloor heating cool down overnight, and what does the heating try to do in the morning when it starts up again? Deliver the 21-degree room temperature demanded by the thermostat as quickly as possible. Therefore, it will probably blast at full power, and you probably won't save much. But as I said, this is purely logical reasoning. Whether it actually works that way technically, a heating specialist would have to comment on that.

How large is your domestic hot water tank at 50 degrees? Keyword Legionella...