This is the story of a contractor named Mac McCarthy. He’s a contractor like any other, struggling with a business that runs, but never quite fast or far enough.

Luckily, Mac makes a friend who shows him how energy efficiency and environmental rules are opening up whole new arenas of possibility for the HVAC contractor. All you have to do is take a little time to learn and apply a few calculations, and show customers how much money they can save if they invest more in quality HVAC systems.