[foobarian]

> I have a degree in electrical engineering, thank you for telling me to do my research, I spent four years doing that.

Apologies for the tone!

> Have you ever opened one up and did a repair?

Well funny you should ask, but yes! Two times. One time, a power relay on the control module shorted and blew a hole in the circuit board. Had to replace the control module there. Another time, the start capacitor needed to be replaced on the giant 2KW squirrel cage motor. I removed the blower, disassembled it, lubricated moving parts, and of course tested it out on a stand. That much blowing power is quite impressive when right next to your face.