HVAC - Heating Technician Download as PDF OPTION III - HEATING TECHNICIAN SHORT-TERM CERTIFICATE – Guided Pathway/Map Item # Title Credits ACR 119 Fundamentals of Gas Heating Systems 3 ACR 120 Fundamentals of Electric Heating Systems 3 ACR 126 Commercial Heating Systems 3 ACR 135 Mechanical/Gas/Safety Codes 3 Sub-Total Credits 12 Total credits: 12 Overview Program HVAC Type Short-Term Certificate