Hi,
Most portable electric heaters use about the same amount of power as a typical hair dryer....and produce about the same amount of heat.
If you go to Home Depot or similar (didn't have H.D.'s down there when I lived in the area), you can pick up a Kill-A-Watt power monitor for only a few dollars. Plug it in, then plug your heater into it. Calibrate it for your electric rates and let it run for a month. Then read display to determine the electric usage of your heater. You might be surprised.
Another option is you could volunteer to pay for a separate power meter for your rig. Then, you will have your own bill to contend with. This won't be cheap, but it will end the problems...on that front.
It is still fairly warm down there, but winter is coming (I have seen 6+ inches of snow in Santa Margarita). So I think that if you guys are having difficulties resolving this issue now, perhaps you might be better off looking for a different place.
Just my 2 cents worth. Good luck.
