Overview/Explanation of HVAC basics.


For the last several years, I have worked as an engineer. Now that my career in that field has seemingly run its course, I recently began looking for alternative options to do something that I love. Upon reconnecting with an old buddy of mine, I found that he was in the heating and cooling business. In fact, he stated that he was currently the owner of his own company and was in the process of looking for someone with whom to partner up as a co-owner. Moreover, far be it from my mind at the time, he suggested that I was actually just the type of person he was looking for. Before having me sign on any sort of official, dotted lines, though, we both agreed that I’d need at least somewhat of an HVAC education. Consequently, over the course of the next two days, he took time to explain some of the basics.


The first concepts he covered were the two types of HVAC systems in which his company specializes: central and zone-controlled heating & cooling, which were fairly self explanatory to me. That said, he expounded upon the fact that although the systems are somewhat different in function, they’re similar in nature, as they both blow old, warm, stale indoor air out and bring in new, cool, “fresh” outdoor air. The infiltrated air, he said, is cooled by being blown over a set of cold pipes collectively known as an evaporator coil, which is filled with refrigerant (aka “Freon”). Finally, a pump–known as a compressor–moves the refrigerant between the outdoor coil and the evaporator coil, respectively, thereby allowing the substance to provide the heating and cooling effects that we all know and love. After an overview like that, I felt as good to go as I’d ever be!

heating and air