This lab is an in-depth study of residential forced hot water heating systems. The student designs and installs a complete hot water system including the piping arrangement, control system, and method of heating domestic hot water. Forced hot water service skills are emphasized. Students must be simultaneously enrolled in HVAC213M. Prerequisite: HVAC114M, HVAC115M, HVAC119M, HVAC120M, HVAC134M, HVAC135M.