Published: June 24, 2014 - by Dan Holohan

I feel sorry for this guy because he gives the time (12:30 A.M.). Most likely, failed steam traps are causing the water hammer that you hear. This is not normal, although it happens all the time. Trap maintenance is the answer, but that's going to require the cooperation of the whole building. With steam, you can't just fix some of the traps.