PE Mechanical HVAC and Refrigeration Exam Domains 2026: Complete Guide to All 7 Content Areas
Understanding the PE Mechanical HVAC and Refrigeration exam domains is the foundation of effective exam preparation.
PE Mechanical HVAC and Refrigeration Domain Deep Dives
Domain Deep Dives for the Professional Engineer Mechanical HVAC and Refrigeration (PE Mechanical HVAC and Refrigeration) exam - 5 in-depth guides to help you prepare with confidence. Browse all study resources or jump straight into a guide below.
PE Mechanical HVAC and Refrigeration Domain 1: HVAC Loads and Psychrometrics (18-27 questions, ~23-34%) - Complete Study Guide 2027
Domain 1: HVAC Loads and Psychrometrics represents the foundational knowledge area of the PE Mechanical HVAC and Refrigeration Study Guide 2027: How to...
PE Mechanical HVAC and Refrigeration Domain 2: HVAC and Refrigeration Distribution and Systems (20-30 questions, ~25-38%) - Complete Study Guide 2027
Domain 2 of the PE Mechanical HVAC and Refrigeration exam focuses on the distribution and systems aspects of HVAC and refrigeration engineering.
PE Mechanical HVAC and Refrigeration Domain 3: HVAC Equipment and Components (24-36 questions, ~30-45%) - Complete Study Guide 2027
Domain 3: HVAC Equipment and Components represents the largest portion of the PE Mechanical HVAC and Refrigeration exam, comprising 24-36 questions or...
PE Mechanical HVAC and Refrigeration Domain 4: Supportive Knowledge (HVAC and Refrigeration) (8-12 questions, ~10-15%) - Complete Study Guide 2027
Domain 4 of the PE Mechanical HVAC and Refrigeration exam represents the foundational knowledge that supports all HVAC and refrigeration engineering...
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