Heater not working?

When I turn on the air or heater it just blows normal air. Even if I try to adjust the heat or cold it stays the same. I appreciate any help.

Will that cause the heater not to work as well. Cause when I adjust from cool to hot it doesn't change just blows regular air

I have dual zone climate control and have just noticed that when I have the heat on, it will mostly only blow cool air. Sometimes, I will get warm air from the left side for a few minutes, then it will go back to blowing cool air. I had the dealer look at it and they said it was the "oil cooler", what has this to do with the climate control problem? Any other possible causes or solutions?

The oil cooler was at fault, it was replaced under warranty, now it works fine.

When driving car the heater blows hotair, then when stop at a light it starts blowing cold air

Hi there, so I got my car this summer. As we all do when purchasing a new/used vehicle we check to see if all operations are operating properly. When I gave the A/C a try it worked perfect I used it probably about 2-3 more times after. After I noticed my car kept blowing out hot air. I figured I would put Freon in the car thinking that may be the issue but no hope, also changed out the fuses and nothing. So today we ended up having colder weather, in which I wanted to use my heater. I went to turn it on after noticing my car was warm enough for that so low and behold, I got cold air coming out. I haven't taken it to a professional yet because we all they they charge just to look at it. So i'm trying to get any advice first on what it can be so I have some knowledge of what i'm talking about before I take it in. I feel I got taken advantage of last time I took my car in. So all the help would b greatly appreciated. So thank you in advance.

Okay, going to work on it today. I will let you know once I know okay. Thank you so much for all your help your amazing and much appreciated.

I check the both the upper and lower radiator hoses and they were hot and tight.I check both of the heater hoses and found them to be tight and hot.I did a visual into coolant to find with enough antifreeze. The engine to be coming up to operate temperature. The temperature gauge is reading in the operating range. The vehicle doesn't seem to be running hot.

The a/c does not blow air at all. The blow motor and resistor are good. The control panel turns on and the compressor works, too. What can I do?

Previously was stuck on heat, dial turns but wouldn't switch, now stuck on cold and won't switch back to heat. Heater core not heating up. Can't locate flapper.