HVAC Components
This component compresses and circulates refrigerant through the system.
What is the compressor?
The refrigerant changes from a low-pressure gas to a high-pressure gas here.
Where is the compressor?
This HVAC setting removes moisture from cabin air and clears windows.
What is defrost?
These should always be worn when servicing HVAC systems.
What are safety glasses?
Warm air from the vents may indicate this common system issue.
What is low refrigerant?
This component removes heat from refrigerant using airflow through the front of the vehicle.
What is the condenser?
Heat is released to outside air during this stage.
What is condensation?
This door inside the HVAC box controls air temperature.
What is the blend door?
This machine is used to recover refrigerant from a vehicle.
What is a recovery machine?
Ice forming on the evaporator may be caused by poor airflow from this component.
What is the blower motor (or cabin air filter)?
This component absorbs heat inside the passenger compartment.
What is the evaporator?
Refrigerant absorbs cabin heat during this stage.
What is evaporation?
This motor pushes air through the vents.
What is the blower motor?
These gauges measure system high-side and low-side pressures.
What are manifold gauges?
Rapid compressor cycling may indicate this condition.
What is low refrigerant pressure?
This component stores excess refrigerant and removes moisture in many automotive systems.
What is the receiver-drier?
This side of the system contains hot, high-pressure refrigerant.
What is the high side?
This system feature allows air inside the vehicle to be reused for faster cooling.
What is recirculation mode?
Venting refrigerant into the atmosphere is this type of action.
What is illegal?
A clogged condenser can cause this pressure reading.
What is high head pressure?
This device controls refrigerant flow into the evaporator.
What is the expansion valve (or orifice tube)?
The four basic stages of the refrigeration cycle are compression, condensation, expansion, and this.
What is evaporation?
This sensor may prevent compressor operation if refrigerant pressure is too high or too low.
What is the pressure switch (or pressure sensor)?
This light is commonly used to locate refrigerant leaks with dye.
What is a UV light?
This diagnostic tool can detect leaks electronically by sensing refrigerant gases.
What is an electronic leak detector?