Mine says 16 degrees and yes I believe you do.
yes a split vacuum hose/pipe will effect emissions it changes the air/fuel mixture and depending on the year of the vehicle the engines computer can not compensate for the leak and car will fail a tail pipe test in some cases the check engine light will be on
When you say in the red do you mean in a vacunm? if so it sounds like a blockage or expansion valve, I had the same problem and pulled a filter dryer and expansion valve from a 97 Sebring at the local junk and now I have ice cold air, total cost $15 bucks, hope this helps, CB