Waaaay back on the subject of air conditioning:
DIY Controller for '04-'09 Prius A/C Compressor - DIY Electric Car Forums
He was able to run a Prius AC compressor at 2k rpms @ 50v, 4k rpms @ 68v.
Pick up a cheap used part and build the controller yourself? Lets you place the compressor pretty much anywhere you want it and not pull engine power to do AC if you are using a plugin hybrid model.
Sam