The problem is that most A/C remotes now work in this "stateful" mode; in short, the remote itself remembers your settings for temperature, fan speed, oscillation, etc.; and each time you press any one of the buttons, it sends ALL of the settings over to the air conditioner. So even the basic functions end up being not so basic. (I mean, even to send a power on / power off command, you've gotta send a valid signal with temperature / fan / oscillation data, and there's usually a checksum or two mixed in to force you to get all the numbers correct...) In short, these guys practically require writing a whole new code path just for themselves. I do intend to get it done eventually!