Most commonly, the compressor is not working, the evaporator is blocked by dirt, the condenser motor isn't woring. A trained technician needs to evaluate
If the unit works in the heat mode, then the problem is usually located in the outdoor unit.
There is something wrong with the compressor or there is no refrigerant in the system. Have it checked out. Goodluck Joe
Because something is wrong with it. When it is off it does`nt blow anything, that `s why you only notice it when it is on.
A hair dryer blows hot air out.
low on freon
you broke something when you took the blower off .......
There is a handle that you pull to close the vent that blows hot air into the balloon.
The Air Conditioner is on
Differences in air pressure.
One thing to do is to check the A/C Relay. Mine wasn't plugged in once and it did that.
most likely your blend door is broken! so ,your getting hot air from the heater with the a/c on. you will need to fix the heat control unit under the glove box .
Well the main reason why your car blows out cold then hot is because the air conditioner may not be working properly. You should go to the car shop and get it fixed.