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
Hopefully you’ve read enough replies to understand you need to report this to building maintenance. This is not a DIY fix, if you fuck it up, you risk injury or fucking up the heat for the entire building.