This course provides training for the installation, operation, maintenance, and repair of fossil fuel fired heating systems. Hydronic boilers for residential, light commercial, and steam boilers for commercial and industrial operations will be covered. Safety, operational sequence, maintenance, and troubleshooting of these systems will be taught. Applicable national electrical code, international mechanical code, the national fuel-gas code for operation, installation, and service will be included. Fuel piping and venting is also covered. Students are required to take national certification ER exams for gas heat, combustion analysis, and fuel efficiency. Prerequisite: EST 100 or instructor permission.