Well yes it IS cooler. But will it really save on energy? Probably not. You see, I will have to run that much faster to get to my litter boxes so I don't get attacked by the dogs. That will force me to eat more food, costing the people as much money as they might be saving. And let's not forget that it is the cat's turn to tear around the house now that the dogs are sleeping downstairs; let them wake up every time one of us jumps off the counter and lands on the floor.
At least the cats are on top where they belong.