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
Oh, I know this!
Radiators run at different temperatures, radiators could run at around 80 C which is enough to “steam”. In my part of the world, we’ve lowered the water temperature to not scald people neither on the radiators nor if they’d start leaking. OTOH we now have more radiator surface area and insulation.