Valeooscope - Air Conditioning System Thermal comfort loop

The HVAC is located in the vehicle cabin, under the instrument panel. For big vehicles & Sport Utility Vehicles, some additional units are used: g Booster (blower unit) to improve the air flow rate g Rear HVAC located mostly in the boot The rear HVAC can be: a rear heater (heating & ventilation functions) or a rear cooler (cooling & ventilation function) or both. For vans & minibuses, some HVAC units are located in the ceiling.

Did you know that: On Electric Vehicles (EV’s) and hybrid cars the additionnal heater located in the HVAC may be high voltage driven. All appropriate measures must be taken prior to servicing this part

See the orange cable on Nissan Leaf HVAC

The HVAC unit fulfills the following functions:

Air grating / Filtering Grille / Cabin filter

Air distribution Air defrost flap Air front flat Air down flap

Air recycling Air intake

Air flowing Blower

Air filtering Cabin Air filter

Air mixing Mixing flap

Air refreshing Evaporator

Air heating Heater core / Auxiliary heater

HVAC: Heating Ventilation Air Conditioning

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