I just posted on this under the LP thread. I am a full-timer and currently staying at parks on a monthly basis, so I do pay for electricity. Since I'm in San Diego, my heating needs aren't great, but I do like to keep the chill off the RV at night. This month I was using the electric heater every night. In the park I was at last month, my electric bill was $150, which seemed high. So, once I found out on this forum that I could turn off the A/C fan and the furnace was not that loud, I switched, about a week ago. I guess I'll see how that affects my electric bill and how fast I run down the propane.