So, I live in an 80 year old house, with a gravity based hot water radiant heat.
In my bedroom, there is a radiator, and every night, around 4-5am, when it starts warming up a drip... drip... drip... sound starts. And I cannot sleep through it. Earplugs used to work, but not anymore. It's like a drill going into my head.
So what can I do? What's Causing it?
If i kick the radiator (which I know is probably not hte greatest idea), it stops for about 30 seconds, then starts up again. Just long enough for me to get my hopes up. When it started this morning, the radiator wasn't even warm yet, so I don't think it's floorboards expanding... I could be wrong though.
Here's the setup of the system, and what I've tried so far: 3 floors, 15 radiators (13 working, 1 cold, 1 shut off), 5 per floor. Gas furnace, expansion tank next to the furnace in the basement (is that weird?)
The system had been filled to 20 PSI, so I just upped it to 25 PSI, bled all the radiators, and refilled back to 25 PSI again. No luck, still getting that damned sound.
I've tried spraying the intakes to the radiator with WD-40, I've tried pushing pillows under the radiator to dampen the noise (it didn't... just changed the tonal qualities a little), I've tried cursing at it and praying. Nothing has worked.
Please.... Please... PLEASE Help!!!
Also, if anyone has any clue why one radiator would be cold, yet still spits cold water when bled, I would welcome some help with that too...