Let me share the harsh truth: nearly all HVAC failures take place because someone ignored a step. Did not calculate the load properly. Used cheap equipment. Miscalculated the insulation needs. We have fixed countless of these messes. And each time, we file away another learning. Like in 2017, when we started adding WiFi controls to all system. Why? Because Sarah, our master tech, got frustrated of watching homeowners lose money on inefficient temperature control. Now clients save 20-30% yearly. https://fliphtml5.com/homepage/lweref/product-air-heating,-cooling,-and-electric/