Prepare to excel on the NATE Core and Specialty Exams with the NATE Study Guide 2025–2026 by Bright Minds Publications, a complete, authoritative, and technician-focused resource designed to build true HVACR mastery. This comprehensive guide takes you through every essential principle of heating, ventilation, air conditioning, and refrigeration, giving you the depth of understanding required to perform with confidence both in the field and on exam day. Structured across ten expertly developed learning chapters, this study guide covers the foundations of HVACR science, heat transfer, refrigeration cycle dynamics, system components, airflow behaviour, electrical theory, diagnostics, combustion processes, system performance, and troubleshooting. Each section is written in clear, practical language that helps you connect theoretical concepts with real-world service applications. To reinforce your learning, the book includes 800 exam-style practice questions that reflect the tone, difficulty, and problem-solving approach used in actual NATE examinations. Each question is paired with detailed explanations to help you understand not only the correct answer but also the reasoning behind common mistakes, strengthening your diagnostic thinking and technical decision-making. You will also benefit from a full-length 150-question mock exam (50 Core + 100 Specialty), designed to simulate true test conditions and evaluate your readiness. Whether you are preparing for the Air Conditioning, Heat Pump, Gas Heating, or Installation pathway, this guide equips you with the tools to succeed. Clear, comprehensive, and aligned with NATE’s industry standards, this study guide is the ultimate resource for technicians who want to validate their skills, advance their careers, and deliver high-quality HVACR service with confidence. Whether you are new to the field or an experienced technician pursuing certification, this book gives you the knowledge, structure, and practice you need to pass the exam and to excel in the industry.