This is the brutal truth: nearly all HVAC failures occur because someone skipped a step. Did not calculate the load properly. Used cheap equipment. Misjudged the insulation needs. We have fixed hundreds of these failures. And every time, we remember another insight. Like in 2017, when we decided on adding smart thermostats to all system. Why? Because Sarah, our master tech, got frustrated of watching homeowners lose money on inefficient temperature control. Now clients save hundreds yearly.