Let me share the ugly truth: most HVAC failures happen because someone ignored a step. Didn't calculate the load properly. Used undersized equipment. Misjudged the insulation needs. We've personally fixed countless of these disasters. And every time, we record another lesson. Like in 2017, when we decided on adding remote monitoring to every installation. Why? Because Sarah, our master tech, got tired of watching homeowners waste money on inefficient temperature settings. Now clients save $500+ yearly.