What is the difference between an air heater and a compressed air heater?

Air heaters are quite common to us, but with the development of industrial production, compressed air heaters have emerged. From the name, it can ensure the control of different compressed air temperatures. The temperature control range is relatively wide, from 20 degrees Celsius (68 degrees Fahrenheit) to 120 degrees Celsius (248 degrees Fahrenheit), which can be controlled. It is commonly used in industrial or respiratory systems. What is the difference between compressed air heaters and traditional air heaters?
The compressed air heater uses external force to compress the air, which, under the action of the air compressor, reduces the volume of the air and increases the pressure significantly, making it a power source. It is in a transparent state, relatively clear, and easy to transport without any harm. There is no need to worry about the danger of fire, and overloaded work will not occur. Air is inexhaustible, so it is affected by the environment.