||01-20-2013 10:07 AM
FHW Baseboard Pipe Knocking
I am having this issue on my second floor where the bedrooms are....
The heat piping run is entirely on this floor (save for the feed up and return back to boiler). So each register has the pipe that comes up from the floor, feeds the register, then goes back down into the floor to the next register.
One room is just very noisy, especially when it's cold and it's 2AM, lol. The knocking starts gently, then gets faster and louder and eventually stops. I do not hear anything until the next boiler run. If it was only expansion, wouldn't I hear something as the ppe cools? I have widened up the holes where they come through the floor, but I am thinking it is either under the floorboards, or some sort of pressure bleed thing...