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 ...

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 ...