At 6:51am this morning it was 46 degrees, and at 1:51pm it was 67 degrees, right now it is 4:37pm and it 74 degrees. Is it safe to run my PTAC wall unit AC for about 30 minutes to cool the room a bit, or was it too cold too recently? Renter who doesn't want to damage brand new PTAC unit.
Is the only rule of thumb as long as it is 65+ degrees outside, it's safe to run a PTAC unit on AC/cool Mode? Does recent low temperatures change anything like the scenario I gave in the title?