The way they have >100% efficiency is if you are trying to increase the temperature, you can create new heat (which is extremely easy and can be done with essentially 100% efficiency) or you can move heat from elsewhere (creating new heat in the process as well, so it ends up being over 100% efficiency).

These incredibly high efficiency rates come from interpreting heat as success. It’s very easy to add heat to a system. It’s very hard to get rid of it.

Any system that moves heat from one area to another must necessarily produce more heat as well.

When your refrigerator cools your food, it vents hot air, adding more heat to the outside world than it removed from inside itself.