Conquer the California HVAC Contractor Exam (C-20 License) in Under 90 Minutes: Study Guide for Heating, Ventilation, and Air Conditioning Systems, HVAC Installation, and Refrigeration Principles Audiobook By Philip Martin McCaulay cover art

Conquer the California HVAC Contractor Exam (C-20 License) in Under 90 Minutes: Study Guide for Heating, Ventilation, and Air Conditioning Systems, HVAC Installation, and Refrigeration Principles

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Conquer the California HVAC Contractor Exam (C-20 License) in Under 90 Minutes: Study Guide for Heating, Ventilation, and Air Conditioning Systems, HVAC Installation, and Refrigeration Principles

By: Philip Martin McCaulay
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Preparing for the California HVAC contractor license requires a clear understanding of heating, ventilation, air conditioning systems, refrigeration principles, airflow, electrical controls, installation practices, and safety. This concise study guide presents the core technical knowledge used in modern HVAC systems, focusing on how mechanical components interact to regulate indoor comfort and environmental conditions.

The book explains the fundamental science behind HVAC operation, including heat transfer, airflow behavior, psychrometrics, and refrigeration cycles. Learn how compressors, evaporators, condensers, air handlers, duct systems, and ventilation equipment work together to move heat and control temperature, humidity, and indoor air quality within residential and commercial buildings.

Practical chapters explore HVAC equipment installation, system startup procedures, airflow balance, refrigeration diagnostics, and troubleshooting techniques. Additional sections address electrical controls, system testing, preventive maintenance, and common operational conditions that affect HVAC performance. These topics reflect the technical skills required to understand how HVAC systems operate in real-world environments.

If you’ve already invested time and money into preparing — don’t leave success to chance. This quick, focused review is here to help you pass the first time.
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