I was watching a home improvement show (I was dead bored..and sometimes, they’re interesting) and unless I’m wrong, and I rarely am in matters such as these, a KW of energy produces a set amount of heat (BTU). Yet, all the time, you’ll see that there’s some company that claims to have a product, fueled by electricity, that uses a third of the energy and produces the same amount of heat. I don’t know how the hell they can do that. It’s completely against the laws of nature. You cannot get more energy out of something than you put in/that is already there. Now, if they really are 3 times more efficient, that would put the original at an efficiency of, at most, 33%. Car engines are incredibly inefficient, yet some have a higher efficiency. Hell, some have it in the low 40s, which, for an engine, is incredibly good.