Here's the ugly truth: most HVAC failures happen because someone ignored a step. Did not calculate the load accurately. Used incorrect equipment. Got wrong the insulation needs. We've personally fixed dozens of these failures. And every time, we remember another insight. Like in 2017, when we decided on adding remote monitoring to every installation. Why? Because Sarah, our lead tech, got sick of watching homeowners lose money on poor temperature control. Now clients save $500+ yearly. https://gitee.com/productairheating