I know you guys get warm down there in Texas, but, sheesh, you have the AC on already?!
I had to ask the guy I bought my Jeep from when I first got it and was looking in the engine compartment and saw the AC unit, if this thing really had AC. Seemed kind of redundant in a Jeep to me!
I've never used mine, although it works, and in fact, have the fuse pulled for it!
28 degrees here and just got hammered by 10-12 inches of wet, sloppy, slippery snow here!
Crank the freaking heater!! That works VERY well in Jeep.
Get the kit for recharging AC by yourself. Read directions.