But on the other hand with electric heaters if you go over a certain kw usage per month the power company charges a higher rate. But i guess that would depend on how much time youy spend out there.
I agree with 58yeoman. I had a 30,000 btu ventless ng and the amount of moisture it put in the air was crazy. I havent finished my walls of with drywall but the paper back on my insulation was getting wet spots everywhere and all my tools were damp. I have a house furnace now and no more...