Expert: J Cook - 1/22/2009

Question
I have a hot water boiler in a boiler room of my office building Slab foundation. The pipes from the boiler go into the attic and over to a radiator that has a fan blow the hot air down. Recently I lost pressure and I think I have air in the system. Boiler is hot pipes are hot but by the radiators in most cases one is hot and the other is cold. My problem is how do I bleed the system when the highest point is in the ceiling and there is no bleed valve/system."

Answer
Unfortunately there have to be air bleeds and with the piping going above the ceiling, this is where the bleeds will be. There may be multiple bleeds as there are usually bleeds at each radiator and also on the piping where it penetrated from below to above the ceiling at its highest point before it turns to feed the radiators. I agree it most likely does have air. Thanks J