What does HVAC/R mean?
This is a question that I get asked a lot, so I thought that I would write a blog post on the subject to explain it to you.
Five Letters and Four Concepts
HVAC/R stands for Heating, Ventilation, Air Conditioning, and Refrigeration.
There are five letters and four concepts, and all four of these concepts revolve around the subject of controlling temperature.
Ultimately, all that a HVAC/R mechanic is concerned with is to control the temperature within a given space to produce a desired effect.
What the HVAC/R trade is attempting to accomplish
The effect may be to keep a residence at a comfortable 18 degrees Celsius during a hot summer day, or flash freezing fresh produce to -50 degrees Celsius within half a minute. The equipment that is used to achieve these effects can vary widely, but the general concepts are the same across all of the HVAC/R disciplines.
It is interesting to note that there are several sub-specialties and specializations within this trade – so much so that it is impossible for one person to know all of the aspects of the entire HVAC/R field. For example, I am well versed in commercial compression refrigeration equipment. There is a sub – specialty within the trade known as TAB, or Testing, Adjusting, and Balancing, which has to do with balancing air pressures and air flows within a building. That is already a challenging job on a small structure, so imagine attempting to balance the air flows in a large shopping mall. Although I have a good rough idea what Testing, Adjusting, and Balancing technicians do, I really would be lost if I attempted to perform their work. Better that I stick to repairing commercial refrigeration.
So now you know what HVAC/R stands for. Feel free to demonstrate your new knowledge at your next dinner party and impress all of your guests!
Until next time, stay warm (or cool).