When you adjust your thermostat, you expect the heating or cooling system to respond and make your home comfortable. So when nothing happens and you notice “Heat On” or “Cool On” flashing on the screen, it’s not always clear what’s going on. Sometimes it’s just a normal delay before the system starts, but other times, it could mean something needs attention. Our team at Premier HVAC Services helps Chambersburg homeowners figure out what those flashing messages mean, what they can check themselves, and when it’s time to call a technician.
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