Loud rumbling noise when boiler is on

zachwd

We live on the first floor of an up/down duplex. Each floor is a separate unit. Each floor's heat is controlled by a boiler in the basement. When the person living upstairs uses his heat, there is a loud rumbling noise that vibrates our floor and walls. When this is happening, the boiler itself doesn't seem to make any unusual noises, so I'm guessing it's coming from a pipe running from the basement to the second floor. Here's a recording of the sound from our apartment (the upstairs heat turns on, runs for a couple minutes, turns off briefly, and then runs for a couple more minutes): https://www.dropbox.com/s/7hvqay3w2hg3eri/heating-noise.mp3?dl=0. Anyone have any ideas what this might be or what we might be able to do about it?

GBart

That's an electric motor vibration being transferred to the beams because a mount is wrong, as in the pipe is mounted directly to and tight to the wood. The motor bearings are going, a technician will have to address both.

HomerJSmith

That sounds like the Red October running on hyperdrive.