How does a blower work on a car?

A car’s blower motor, also known as the heater blower motor or HVAC blower motor, is an electric motor that powers a fan to circulate air through the vehicle’s heating, ventilation, and air conditioning (HVAC) system. It draws power from the car’s battery and is controlled by the HVAC system settings, allowing for регулирование скорости вращения вентилятора and airflow to regulate temperature.

Here’s a more detailed explanation:

Function:

The blower motor’s primary job is to move air within the car’s climate control system. It can draw air from outside the vehicle or recirculate existing cabin air.
Location:

Blower motors are typically found behind the dashboard, often on the passenger side, but sometimes in the engine compartment.
Speed Control:

A resistor or a more modern control module adjusts the amount of current flowing to the blower motor, which controls the fan’s speed. This allows the driver to adjust the airflow intensity.
Heating and Cooling:

When the car’s heating system is activated, the blower motor pushes air over the heater core, which warms the air before it enters the cabin. For cooling, the air is passed over the evaporator core, which cools the air before it’s distributed.
Troubleshooting:

A faulty blower motor can result in weak or no airflow from the vents. Before replacing the motor, check the fuses and relays related to the blower motor, as these could be the source of the problem.