Why Does My Heater Come on When System Is Set to Cool?
Noticed a sudden spike in your electricity bill? Or maybe your air conditioning runs for extended periods of time without cooling the house? If so, you might be experiencing a malfunctioning HVAC system. More specifically, your system’s heater is turning on even though the air conditioner is set to “cool.” What is causing your heater to activate? Electrical issues within your central AC unit are the most likely causes of your heater turning on when it shouldn’t. Shorted wiring, faulty electronics in your furnace, or an electrical problem with your thermostat, for instance, could
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