Heat pump/ventilation system too high energy consumption

I am currently on a business trip and can actually only test that on the weekend

my brother-in-law

Do you also have to help your brother-in-law with eating or going to the toilet? Or is brother-in-law just the synonym for "I'm just asking for a friend"? ;)

Do you have to help your brother-in-law eat or go to the toilet? Or is the brother-in-law just a synonym for "I'm just asking for a friend"? ;)

My brother-in-law somehow has two left hands and a technical understanding of -1. I myself have my "old building" pretty much under control and have largely brought it up to date.