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by dghughes 1466 days ago
No, first of all perpetual motion machines don't exist, will never exist.

The 300% efficiency means if you had 1 Watt you could use it to power a fan and coolant lines to move heat. Or use 1 Watt to generate heat and then once made to move that heat.

The moving of heat already existing in the air (or in the ground) is more efficient than generating the heat and then moving it.