Breadcrumb Home Heating, Ventilation & Air Conditioning HVAC119M HVAC119M: Related Electricity II Theory Download as PDF Program Heating, Ventilation & Air Conditioning Theory Hours 3 Lab Hours 0 Credits 3 A theory based continuation of HVAC109M covering electrical circuit controls commonly found in air conditioning and heating systems. Students must be simultaneously enrolled in HVAC120M. Prerequisites: HVAC109M and HVAC110M.