This is the ugly truth: nearly all HVAC failures occur because someone missed a step. Didn't calculate the load correctly. Used incorrect equipment. Got wrong the insulation needs. We have fixed dozens of these disasters. And every time, we file away another insight. Like in 2017, when we began adding smart thermostats to every system. Why? Because Sarah, our senior tech, got frustrated of watching homeowners burn money on bad temperature control. Now clients save $500+ yearly.
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