My Mom is in her eightys. I called a plumber in Aug 2012, replaced the McDonnell/Miller LWCO low water cut off 47/2 $675.. Same plumber was called Jan 8,2013 back. He trouble shoot the problem and replaced the same unit, yet I still have the problem. After the heat come on for about 15 mins/ goes off.the pipes connecting to the MM LOCO the vibrating starts, shakes, and makes a loud noise. The boiler is steam, I know it's old. Do I call the same plumber or call someone differently?
Then again, if you don’t have the time, tools, or inclination to do your own plumbing repairs, you can hire a pro. A plumber can handle nearly any problem that involves pipes, from replacing a garbage disposal to unclogging a bathtub drain, but, if your problem is a stopped-up drain, you’re usually better off calling a drain-clearing service because these are generally less expensive.