Our air conditioner froze up at Saturday and after it all melted I turned the air back on and the fan on the air conditioner unit outside would run but nothing would come out of the vents. I even turned it on heat to see what would happen and still nothing would come out. Would this be caused by the air conditioner or the furnace. I just didn't know which repair guy I should call.

Either can fix problem. They are one and the same

I just had an air conditioner repair guy come out and he said that its not the air conditioner. He said that it is the furnace possibly the blower motor but he can't repair it and that I have to call someone that deals with amana parts since that is the brand that I have. Is that true or should anyone be able to do it.

Anyone should be able to change the motor. It does not have to be Amana. There are many motors available to replace the one in it now. He just must have not wanted to do it