|Posted by Charlie Bain on January 09, 19100 at 15:15:44:|
My pipes have developed a VERY loud noise. Much like water hammer; but it happens most often at
night, when no water is in use (this morning at 4 AM!). It sounds like a mad-man is in the basement,
trying to yank the pipes out by hand. The noise starts moderately (perhaps 5 - 10 thumps, then builds
quickly to a house-shaking series of another 5 - 10 thumps, and ends with a giant final thump. It lasts
less then 5 seconds. Usually, there is a second, less violent series within 2 minutes of the first. It
typically happens once a day, late evening or night; been going on for about 3 weeks. Only 1 time has
any water been in use when the noise starts; absolutely no hammer from faucets, washer, or toilets
during normal use.
Some history: several months ago, the PRV on the water heater starting leaking, so I replaced it. The
Could this be coming into the pipes from outside? Is there "recording" water pressure guage that would
Any suggestions would be greatly appreciated.