Aw. I was going to post the link to his video, but you beat me to it.
But yeah, Technology Connections makes some excellent and informative videos. To anyone else who sees this: If heat pumps, refrigeration, or climate control technology aren't your cup of tea, he also covers older technology based around electromechanical designs (as in, pre-dating microcontrollers and programmable logic) and analog media recording devices.
I went to one of their concerts, and their lead singer, David Draiman, was one of the most wholesome and honest guys I've ever seen. Funny headline, but I hope he recovers quickly and without any long-term effects.