I recently purchased a 1916 bungalow with original radiator heat. They are the tall cast iron radiators in front of most windows. Here is a photo of one:
I think the system works fine because it heats very well. However, the radiators make a couple of loud bang noises when the heats kicks in or the system starts to cool down. I am guessing that this is due to expansion of the pipes. It's not a major issue and we've gotten used to it. However, is this normal or something that I should get checked out?
Any help would be greatly appreciated. Thanks!