Hoyt, I agree. And I can't yet figure out how they can beat a Carnot cycle's efficiency by such a long shot. (In fact, I'm challenging that they can not!). They are total BS-ers as far as I can tell. Unless you couple it with "solar" and "save" your energy that way, it's a total scam. It's little or no more efficient than a boiler/condenser with a similarly convoluted heat-reclaiming core.

I CALL BS!!! I don't always obey the laws of men, but I never violate the 2nd law of thermodynamics, and I bet they don't either.

 
ASU's own mechanical engineering professor Walter F. Albers, whom I've met, has been working on this for years, yet I see no credit given. A reference: http://www.freepatentsonline.com/5097668.html