A blower is a fan that pushes heated or cooled air through the vents into a car, the temperature or the speed of fan can adjusted either from the front center console or rear console for a larger vehicle. To adjust the fan speed, the resistor sends a signal and certain amount of current going to the blower's motor according to the speed selected. Most blowers can be found under the pessenger side's dashboard while others may be found at the rear for a larger, longer vehicle like bus or van.
Chuan Jieen provides two different direct current voltages for customers to choose, DC 12V or DC 24V. Before shipment, the blowers will go through a series of testings, such as speed tests, noise tests, electrical leakage tests and such.