It's just an experiment to see what I can do - so all practicality can be easily ignored :) It's really so I can learn a bit about HVAC and the electronics involved.

Additionally, I wanted to see how small a panel system I could make, so that the unit itself could operate. Imagine putting a window unit in, but needing no external power source. So, the device would (ostensibly) be self contained and powered. Again, just experiments.