What is a blower?
The air conditioned air that enters a car’s cabin is propelled by a motor driven fan, known as a blower. The blower module is located inside the Heating Ventilation Air Conditioning system (HVAC).
Parts of a blower
A ventilation blower consists of:
- A fan
- A drive motor
- A power control device
How does a blower work?
A ventilation blower uses the correct amount of thermal power from the heat exchangers to achieve the desired flow rate. A blower is also designed to monitor the heat loss in the air conditioning circuit, in order to set the pressure.
The importance of the blower
The ventilation blower ensures efficient air flow in the cabin. It is a key component for passenger comfort and safety. It is the blower’s responsibility to demist the windscreen for example. Most vehicles, including those without air conditioning, are equipped with a blower.
Valeo: an industry leader
Valeo is an industry leading supplier of ventilation blowers for both Original Equipment (O.E.) and the aftermarket. In fact, one out of every two vehicles produced in Europe is equipped with a Valeo blower. Benefits of a Valeo blower include:
- A perfect fit, meaning quicker assembly
- Minimal noise from the blower at all speeds
- Optimized airflow to efficiently reach the passengers desired temperature
The blower must be replaced after a crash, if it produces irregular airflow or if it generates excessive noise.