A second style of metering device that is used in many AC systems is the thermal expansion valve (TXV). The TXV metering device has been…

The following list explains what each component of the AC system is and what it does. The AC compressor serves as the pumping device that…

It is helpful to understand the refrigerant flow through an operable AC system. The refrigerant is continuously moving and changing pressures and states while the…

Orifice tube AC systems are very effective designs that have been used for many years. The one drawback of this system design is that the…

One design for automotive AC systems uses an orifice tube as the metering device. This system has been used for a long time by many…

In the AC system, refrigerant is the substance that is used to move the heat out of the cabin. In a similar way, coolant is…

Electric actuators are widely used on late-model vehicles to move the duct box doors. These actuators are used to move the blend door, the mode…

In a manual control system, the driver or the front-seat passenger has the option to pick the blower speed, the air temperature, and the distribution…

The HVAC system uses hot engine coolant to move heat into the passenger compartment when the heat mode is chosen on the control head. The…

The three types of refrigerant that have been used by OEMs are known as R12, R134a, and R1234yf. Many people describe the refrigerant as Freon,…