Baby it's cold outside...

No heating or hot water
Waking up well is not necessarily done under a cold shower. And coming home after a day of work or studying is nice when you turn on the heating and it actually gets warm. Is this not the case?
Vent the heating system:
If your heater is not getting warm enough or only partially warm and the pipes are bubbling and ticking then there is air in the pipe. As a result, the heater is no longer functioning properly. The solution is easy: watch
If the water pressure is lower than 1.2 bar, you need to top up the boiler. Before reporting a malfunction you should also check and rectify this. The water pressure should be between 1.2 and 1.8 bar. Top up the boiler like this!