@Duck , here is why i had mentioned to you, to NOT drill a drain hole in your new a/c for your work shop..
the condenser, sits in the tray that collects the water, and keeps it cool. years ago, yes, all a/c's had a drain hole, but not so much anymore. i also told you that at times, i can hear the water splashing up against the fan, this adds to the cooling of the condenser.
in this pic, you will see "some of" the drain pan, and i can assure you even if the pic does not show it, the condenser sits in there for cooling. when you drill a hole to let that water drain out, you are now allowing the condenser to over heat, shorting the useful life of your a/c. later as the condenser cools, that water evaporates.
this morning, i went around to all my a/c's and mom's, and later sister's to vacuum out the evaporator fins, wash the filters, then Next weekend, take them out of the windows for winter storage.
