This is the brutal truth: the majority of HVAC failures occur because someone skipped a step. Didn’t calculate the load correctly. Used undersized equipment. Miscalculated the insulation needs. We’ve fixed hundreds of these disasters. And each time, we record another lesson. Like in 2017, when we started adding smart thermostats to all install. Why? Because Sarah, our master tech, got tired of watching homeowners waste money on bad temperature management. Now clients save 20-30% yearly.