You have problems with your system or no insulation in your house. How old is your system? have you had the freon checked lately? Is it a heatpump or electric heat? Sounds like electric heat to me. I have 2600ft2 W/10 seer and had thermostat set at 70 for the month. my bill was higher than normal but was still under 200$. normally it is $75-129/month. try the Time of Use plan from progress energy. I have saved 197 in the last 12 months.
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