OBT3
Entry oil burner technician prep
Build confidence with oil burner fundamentals, supervision rules, safe service sequence, controls, and practical maintenance logic.
Oil Burner Technician
Enter through OBT3 or OBT2, then move into practice sets, mock exams, and review flow built around combustion, controls, safe adjustment work, and diagnostics.
OBT3
Build confidence with oil burner fundamentals, supervision rules, safe service sequence, controls, and practical maintenance logic.
OBT2
Train deeper on combustion, controls, wiring, burner adjustments, diagnostics, and code-based service reasoning.
From theory to practice
Choose your certification path, work through focused questions and revisit the concepts you want to understand better.
Start with 30 free questions. Find the gaps. Build your exam confidence.