Thinking about the same install. I like the idea of routing the antenna wire through the air conditioner, but, why not mount the antenna on the air conditioner, or next to it? You can also put the WiFi Repeater Unit in the air conditioner, or in the free space next to the AC. You would need 120v or, my guess the unit is powered with a 12v transformer. If so you could power it to a 12v source.