Chino, you have got to be kidding, since when is San Antonio considered south Texas?
Really man, I just got back from 5 days in Big Bend, not counting driving. Rolled into home at 2am this morning, 15 hours of driving each way.
Went through San Antonio both ways and man I hate your freeways, thought ours were bad. No way though is San Antonio considered south Texas.
Still gets hot as hell there though.
Seriously though, any process that includes close tolerances does not belong in an uncontrolled climate. This is especially true of wedm where you are working with tolerances in the tenths.
I have seen some companies try to get around this by mounting a window unit AC directly to the controller cabinet (screw the operator), but this does nothing for your mechanicals.
In addition to the aforementioned problems holding dimensions and tolerances I have seen over-heated controllers decide to do some strange things all on their lonesome. If your lucky they'll just quit.
You need to have a serious talk with your boss. If you are dealing with an exiting customer base who are expecting high-quality parts and timely deliveries, you may be in danger of losing them if you can't meet their needs.