Being in SO FL I am always worring about my a/c working. It is a 126 300sd with a well functioning A/C. Lo and behold I am in NO FL and it is 38 degrees out and no heat came out of my car. Luckly I have long pants on and not my normal shorts. I did turn the wheel to a red setting and nothing changed. I am so used to A/C not functioning that I am drawing a brain freeze as to what to look for. Last winter I know we had heat and I never really thought about it. What could be broken or not working. The engine did not even make 80 degrees so I consider it cold out. Any help would be appreciated. Thank you.