This book is a comprehensive guide to HVAC systems for beginners. It covers the basics of how these systems work, including the different components and the refrigeration cycle. It also provides practical advice on installation, troubleshooting, and maintenance. Additionally, the book explores the latest innovations in HVAC technology, such as smart thermostats and energy-efficient designs. By reading this book, you will gain a solid understanding of HVAC systems and be able to make informed decisions about how to keep your home or business comfortable and energy-efficient. $0.99 on Kindle.