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 ...

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 ...

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 ...

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 ...

The Castle Rock, Colo., town council has approved the adoption of IAPMO’s Water Demand Calculator as an alternative methodology for sizing water pipes in single and multifamily buildings. A ...