The radiator makes unbearable noises throu out the night, which drives her insane. We think that this is due to air pockets in the pipes, we can hear crackling and water drops.
The heating system is common to the whole building, and I cant turn off hot water.
How do i open this shit
Call the owner to fix it. If it causes water damage, you’ll be on the hook for that because you fucked with radiator.
Also what’s with the “gave me one afternoon” bit? No one can “give you” time. Do you “give” her afternoons to do a chore? How would that go for you? That sounds like a mother telling a 5 year old they better clean their room “this afternoon or else no dessert”
I’ve been given time to fix something myself before we call a professional, which seems reasonable to me. Even the time window of an afternoon, for something as important as heat makes sense, because you don’t want to be unheated overnight and have your pipes freeze