Hello, I live in a home with propane furnace.Propane cost has been higher than electricity.I want to install a more powerful portable electric space heater that 1500watts.I need either a new 240v line and wall outlet installed,or, I am looking at the feasibility of buying a step-up transformer. I would be able to simply plug in transformer to standard wall plug, and then plug heater into transformer. Is this not possible? I see websites all over the internet selling these units. Thank you for your assistance!