HVAC professionals need to be well versed in mechanical systems and the science behind them. Which one of
the following subjects should they have the most in-depth understanding of and why?
O electrical wiring, because many HVAC systems are electrical in nature
O cement masonry, because many HVAC systems must be wired through the foundation
O plumbing, because cooling systems rely on pipes to carry coolant throughout the building
geotechnical engineering, because HVAC technicians need to know how soil and rock will affect the building environment
