The TCH A/C compressor is electric and run off the same high voltage system as the motor. There is no belt or physical connection between the ICE and the A/C compressor. The ICE powers the compressor by charging the batteries. I believe ECO changes the cycling of the A/C to longer cycles (both on and off.) Really spiffy system, and totally cool (pun intended) for the A/C to work even when the ICE is off.

Not just Super White...Super Duper White...