This is the ugly truth: most HVAC failures happen because someone ignored a step. Didn’t calculate the load properly. Used undersized equipment. Misjudged the insulation needs. We’ve personally fixed dozens of these disasters. And each and every time, we remember another learning. Like in 2017, when we started adding WiFi controls to all system. Why? Because Sarah, our lead tech, got sick of watching homeowners waste money on poor temperature settings. Now clients save hundreds yearly.