This class is online with no designated meeting times. HVAC Apprentice Year 1: Course B; This is one of four 8-week courses that comprise the Year 2 HVAC Apprentice training. Year 2 of the HVAC Apprentice training covers appliance Installation, 24 hours, Intro to Blueprints & Specifications, 24 hours, Basic Electricity, 60 hours, Indoor Air Quality, 15 hours, and Residential Load Calculations, 33 hours.