This is the ugly truth: most HVAC failures take place because someone ignored a step. Did not calculate the load accurately. Used cheap equipment. Got wrong the insulation needs. We have fixed countless of these messes. And each and every time, we record another learning. Like in 2017, when we decided on adding remote monitoring to each installation. Why? Because Sarah, our senior tech, got frustrated of watching homeowners lose money on poor temperature settings. Now clients save $500+ yearly.