I have tested med gas system ( copper pipe ) with a 160LBS pressure. So
I would not worry about the pipes exploding. If it is air harmer turn off
the water to the house drain the water out of the piping. Open all of the
fixtures. What you are trying to do is get water out of the air chambers.
Once the system is drained refill. Water dose not compress the air acts as
a shock absorber. usually air hammer is a loud banging noise so that may be
the problem. Draining the system about once a year is a good idea anyway.
When the water is back on you will get air out of the fixtures for a few
minuets.



wrote in message
oups.com...
Hey all,

I've been in my house for 4 months, however it is 14 years old. I am on
municipal water, not a well.

After turning off the shower this morning, I noticed a rather loud
buzzing/moaning/vibrating noise coming from the pipes when I turned off
the shower and faucet. It made no noise when the water was running,
the water temp and pressure were fine, and I haven't noticed this
anywhere else in the house before. 10 minutes later I then turned on
the shower and then turned it off, and it made the noise again. I then
tried it again 5 minutes later, nothing.

Again, this has not happened before in the house. Could it just have
been air in the pipes, or something much more serious?
Thanks
John