The problem: Replacing electric heating with gas. The apprentice: Allen Charles Edwards (ACE), a first-year mechanic. The technician: N. Arthur Thomas Egan (NATE), a15-year veteran. As the work for ...

Q: Tim, I went to buy some plastic drain pipe, and after looking at all the types my head started to hurt. I decided to leave the store and do some research. I’ve got several projects for which I need ...

You can best test and diagnose a residential hydronic heating system using pressure ports and balancing valves. However, few residential systems have either of these accessories. A commonly ...

Among a service tech’s many responsibilities is to pipe together refrigeration system components. When piping a system together, a technician must decide which pipe size to use — it’s not always as ...

Recently I got asked to size a high pressure natural gas line, which I’m not an expert at, but I wanted to help these guys out. A gas line is sized based on the type of gas used, so that is the first ...