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HVAC:
Heating Ventilation Air Conditioning
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Air distribution
Air defrost flap
Air front flat
Air down flap
Air recycling
Air intake
The HVAC unit fulfills
the following functions:
Air refreshing
Evaporator
Air mixing
Mixing flap
Air heating
Heater core / Auxiliary heater
Air filtering
Cabin Air filter
Air flowing
Blower
Air grating / Filtering
Grille / Cabin filter
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