Here's the brutal truth: nearly all HVAC failures happen because someone ignored a step. Failed to calculate the load properly. Used cheap equipment. Got wrong the insulation needs. We've fixed dozens of these disasters. And every time, we record another lesson. Like in 2017, when we started adding WiFi controls to each system. Why? Because Sarah, our master tech, got frustrated of watching homeowners waste money on poor temperature settings. Now clients save hundreds yearly.