In this world we often find ourselves at the mercy of those who we assume know more than us. This can cost us time, money, energy, and even our health. Arm yourself with the information you need and the questions you should be asking to protect yourself and to make sure that you get exactly what you need when you need it.

Heating and air conditioning systems run on simple principles and ignorance of those can cost you more than you can dream! This book gives you the tools to empower yourself so you will never again have to blindly trust what others are telling you and you can troubleshoot minor problems yourself.