This is the brutal truth: most HVAC failures occur because someone ignored a step. Failed to calculate the load properly. Used cheap equipment. Got wrong the insulation needs. We've personally fixed dozens of these disasters. And every time, we remember another insight. Like in 2017, when we decided on adding remote monitoring to each install. Why? Because Sarah, our master tech, got sick of watching homeowners waste money on inefficient temperature settings. Now clients save 20-30% yearly.