Fitment： 2000-2004 Nissan Frontier 2000 Nissan Xterra What is a HVAC blower in a car? The purpose of the blower is to distribute fresh air at a comfortable temperature into the cabin and to prevent internal fogging of the windscreen. An electronic control device regulates the car blower's ventilation power and speed. All vehicles are equipped with a blower, even those without air conditioning. How Does the Blower Motor of a Car Work? .
