My electricity usage was way out of line for the size of my home. I received a monitor from my electric company that shows the kWh being used throughout the day. There was a consistent 2kWh usage from somewhere. I turned off the breaker switches one by one to narrow down where that 2kWh usage was coming from. What I found was that there are 2 breaker switches labeled FURN for the electric furnace. It was one of those switches that when turned on was using 2kWh. Keeping that switch turned off, I turned the A/C back on and it works. Does anyone know what that other switch is for and why it would be using so much electricity if the furnace was not turned on? Is it OK to leave that breaker switch off?