ID this sound
October 4, 2016 11:08 AM Subscribe
My wife is opening a new daycare in a building that was a daycare before it went out of business a couple of years ago. It's not open yet and she is there alone cleaning, organizing, etc. This sound (short phone video clip) happens 2 or 3 times a day. She said it seems to be coming from a closet with a lot of pipes in it. Any idea what this is? She isn't sure if she should be calling a plumber, the HVAC guy, or the fire suppression systems guy.