Either you have a faulty blower fan in the front, or power isn't getting to it.
That is a stalled Front
Convection causes this as hot air raises up, it heats the top bunc bed
Cooler air does move closer to the ground. I can attest to that because when I was camping, I had to move to the top bunk in the cabin where it was warmer because it was so cold on the bottom bunk. Therefore, cold air goes down and warm air does rise.
nonsense, rubbish, garbage, hot air, twaddle, baloney
You have a bad rear expansion valve located in the rear......
I dont know how to pull out the air bag fron the steering wheel
replace front heater corefront and rear have independent heater cores
it works with compressed air
if you heat in back but not front is usually caused by front heatercore stopped up. you can try to back flush heatercore. also make sure to get air out of system using bleeder screws.
I believe it could be that and they dont want it damaged and to keep the engine cool and maximize air intake
These are classic symptoms of a failed blend door actuator motor.
A warm front occurs when cooler air retreats and warmer air advances. A cold front occurs when cooler air advances, pushing warmer air away. An occluded front occurs when a cold front catches up with a warm front, sending the warmer air aloft. A stationary front occurs when warm and cold air meet, but neither air mass advances.