On Thursday, November 5, 2015 at 7:34:12 PM UTC-5, John Doe wrote:
I just clumsily drilled through something in the AC unit. I can tell
because there is some hissing sound as if gases being released. It's on the
outside, but maybe I should take the AC out of the window.

Thanks.

I'm a little late to this game, but... If I were to drill through AC plumbing, the very first thing I would do is curse enough to make a drunken sailor blush. I assume you've already done that.