Course Content Expand All | Collapse All Lessons Status 1 170501 D1 Introduction, InterNACHI SOP, Roof and Chimney 170501 D1 Introduction, InterNACHI SOP, Roof and Chimney 2 170502 D2 Roof and Chimney, Roof Structure and Attic, Interior Rooms 170502 D2 Roof and Chimney, Roof Structure and Attic, Interior Rooms 3 170503 D3 Plumbing, Water Heater, Electrical System 170503 D3 Plumbing, Water Heater, Electrical System 4 170504 D4 Cooling System, Heating System, Subterranean 170504 D4 Cooling System, Heating System, Subterranean
