Heaters...

[GhettoDogAllStars]

This is from the site that saden posted:
"After much research I have found that one watt of electricity makes 3.41 BTUs of heat, no matter how it's done... with resistance wires, with quartz, with oil filled radiators, with electric blankets, toasters, ranges, heat lamps... you name it..."

I don't know if it's true, but it makes sense. Work is work, no matter how you look at it. Climbing stairs or walking up a ramp of equal height requires the same amount of work to be performed -- it's the same idea.

I guess the only thing you have to worry about (other than safety) is an ineffecient heater -- one that doesn't produce 3.41 BTUs from a single watt.