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
This phenomenon is due to convection, where warm air rises and cool air sinks. The heating method causing this is likely from a heater in the room, which warms the air near the ceiling first and creates a temperature gradient from top to bottom in the room.
replace front heater corefront and rear have independent heater cores
A front forms when two contrasting air masses meet and remain in place due to differences in temperature, humidity, and density. The boundary between these air masses causes changes in weather conditions such as precipitation, clouds, and temperature gradients.
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.
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.