This lecture based course will touch on the following aspects of the refrigeration, heating, and air-conditioning trade: safety as it pertains to the HVAC/R industry, tools and their uses, sheet metal layout and fabrication, iron pipe threading and fabrication, copper tubing joining methods, and PVC piping. The class will thoroughly study the principals of heat transfer, refrigerants and basic refrigeration cycle. Refrigerant manifold gauge attachment and removal, refrigerant phases, recovery system evacuation will also be covered in detail. This lecture is accompanied by the fabrication lab (REFG 111) and refrigeration systems lab (REFG 113) to allow application of content covered in this lecture. Co-requisites: REFG 111 and REFG 113. (F)