Here's the brutal truth: nearly all HVAC failures happen because someone skipped a step. Failed to calculate the load accurately. Used undersized equipment. Miscalculated the insulation needs. We have fixed dozens of these failures. And every time, we file away another lesson. Like in 2017, when we started adding WiFi controls to every install. Why? Because Sarah, our senior tech, got sick of watching homeowners lose money on bad temperature management. Now clients save 20-30% yearly. https://3dwarehouse.sketchup.com/by/productairheating