HVAC specialists typically begin training by exploring how a furnace works and learning how to appropriately respond to common complaints about malfunctioning furnaces. Trainees learn about an assortment of furnace designs and about how each type of furnace is similar to and different from other types.
HVAC specialists also service refrigeration systems. To understand how to service this equipment, specialists learn not only the basics of refrigeration systems but also how the properties of cold air differ from those of hot air.
Most climate-control systems contain an electrical component. HVAC specialists learn how to properly wire heating, cooling and ventilation systems, and how to repair previously installed wiring. To thoroughly understand this aspect of HVAC systems, specialists also study the properties of electricity and rules of electrical safety.
HVAC specialists learn the basics of controlling humidity by studying an assortment of dehumidification methods and learning how these methods are used effectively in heating and cooling systems.
Although the general principles of heating and cooling remain the same, the tools and techniques for heating and cooling a commercial space differ significantly from those for residential heating and cooling. HVAC specialists typically spend a large portion of time studying how to apply their HVAC knowledge in commercial situations.
An understanding of ventilation systems is necessary to ensure that the temperature-controlled air produced by heating and cooling systems is properly circulated. To gain this understanding, HVAC specialists study standard ventilation systems and learn about the potential dangers that poorly constructed systems pose.