No you are right in the second one. Assuming AC is about 40% efficient, then it is essentially (40+(40*.75) and becomes 70% efficient. It may not be a BIG increase, but if every AC unit in Arizona used this, we would save a ton of money and landfill space.
No, that's a 75% increase. A 175% increase from 40%, using Method 2 (
- so we are still in the realms of perpetual motion machines. If they really can do this, buy stock right now