Every person I’ve spoken to in this trade can tell you horror stories ranging from plugged piping to failed boiler heat exchangers.

If you do a quick search of the phrase “required reading,” you’re likely to see the names of classic books such as “To Kill a Mockingbird,” “Of Mice and Men,” “Catcher in the Rye” and “Fahrenheit 451.” 

Hydronic heating and cooling systems that allow air or other gases to enter them do not function well. 

The AHR Expo returned to the Las Vegas Convention Center, Jan. 31-Feb. 2, after show organizers had to cancel last year’s rendition.