Here's the brutal truth: most HVAC failures happen because someone missed a step. Didn't calculate the load properly. Used undersized equipment. Misjudged the insulation needs. We've fixed countless of these failures. And each and every time, we file away another lesson. Like in 2017, when we decided on adding smart thermostats to each installation. Why? Because Sarah, our lead tech, got sick of watching homeowners lose money on inefficient temperature control. Now clients save hundreds yearly.