My room is heated with a hot water baseboard heating system. As soon as the system was installed, it was making
clicking noises. I figured out a way to attach the pipes to the
baseboards, and the clicking noise went away temporarily. Just
recently, I accidentally knocked a textbook from my desk right on top of the baseboards, and after that, when the heat came on, they started clicking like mad, all over again. What I have noticed is that the pipes and the metal baseboard covers only make the clicking noise if the covers are attached to the support brackets; if I remove them, the clicking ceases. I believe this is because when the covers are on, they pull the support brackets tightly together, which increases tension between the support brackets and the pipes. When the pipes heat up and begin to expand, they do not have enough room to do so, and it results in a clicking noise. However, I am not positive that this is what is creating the noise. It's extremely annoying because I
wake up early in the morning whenever the heat comes on and cannot sleep. What the heck can be done about this?

 

it's the physical contact between 2 items, that rub, due to heat induced expansion.

you can try to lubricate w silicone grease, or maybe insert some plastic between the pieces, like a cut up milk container.

can you adjust the hanger/support mechanism to give a tiny bit of space?

 

My hot water pipes in my baseboard system is also making water trickling noises, meaning that there's air in the system. My plumber was just at my house, but he neglected to bleed the system, so I am going to try to do it by myself. Does anyone know how to do it? (If you can't describe it in words, you can post a diagram of a hot water boiler).

 

The water/air trickling noises are a compeltely separate probelm from the poster's original question

quick answer: open the bleeder at each radiator tillall the air escapes, and a steady stream of water comes out