Let me share the harsh truth: nearly all HVAC failures occur because someone ignored a step. Didn't calculate the load accurately. Used incorrect equipment. Misjudged the insulation needs. We've personally fixed hundreds of these failures. And each time, we file away another learning. Like in 2017, when we decided on adding remote monitoring to each installation. Why? Because Sarah, our master tech, got tired of watching homeowners lose money on inefficient temperature management. Now clients save hundreds yearly.