HVAC License Prep Guide

A complete study guide for HVAC trade licensing exams and EPA Section 608 refrigerant certification. This book combines code-based technical content, worked calculations, and field-tested troubleshooting guidance to help apprentices and technicians pass their licensing exam with confidence.

Inside you'll find clear coverage of HVAC theory and fundamentals (heat transfer, the refrigeration cycle, psychrometrics), electrical fundamentals and NEC wire/breaker sizing, piping and ductwork basics, code compliance (International Mechanical Code, International Fuel Gas Code, OSHA/NFPA safety and lockout-tagout procedures), EPA Section 608 refrigerant handling and the current R-410A-to-A2L transition, Manual J load calculations and Manual D duct sizing worked step by step, residential and commercial troubleshooting scenarios, and two full-length timed practice exams with complete answer keys.

Written for HVAC apprentices, technicians, and professionals preparing to earn their license, this guide is designed to build both exam readiness and real field competence.

This book is an independent educational resource and is not affiliated with, endorsed by, or sponsored by any licensing board, EPA, or other certifying body.