A heating, ventilation, and air conditioning (HVAC) system for a vehicle may include: a casing having an inlet and a plurality of outlets; an evaporator disposed within the casing; a heater core disposed behind the evaporator within the casing; and an air mixing door disposed between the evaporator and the heater core. In particular, the heater core and a rear wall of the casing are spaced apart from each other by a first distance, the evaporator and the heater core are spaced apart from each other by a second distance, and the first distance is greater than the second distance.

An air conditioner includes a first inlet-side inside/outside air switching part, a first outlet-side outside/inside air switching part, a second inlet-side inside/outside air switching part and a second outlet-side inside/outside air switching part. In a dehumidifying heating mode, the first outlet-side inside/outside air switching part makes a switch to a ventilation path that guides air having passed through a first heat exchange part into a space to be air-conditioned, and the second inlet-side inside/outside air switching part makes a switch to a ventilation path that guides outside air to a second heat exchange part. In a defrosting mode, the second inlet-side inside/outside air switching part makes a switch to a ventilation path that guides inside air to the second heat exchange part, and a flow rate of refrigerant flowing through the second heat exchange part is reduced more than in the dehumidifying heating mode.

An HVAC system includes an evaporator, a heater, a plurality of outlets, and a sliding control door downstream of the evaporator, which is configured to allow air to flow across one or both of a heated path across the heater and a bypass path bypassing the heater. A sliding stratification door is downstream of the temperature control door and positionable to, in an intermediate position, direct air flowing through the bypass path to be mixed with air that flowed across the heated path before flowing out of the plurality of outlets.

A method for servicing a heater core installed in a heating, ventilation, and air-conditioning (HVAC) assembly for a motor vehicle includes removing a sealing attachment from an interfacing connection interfacing with the heater core. The method includes sliding the heater core in a direction of insertion. The method includes disconnecting, from the heater core, the interfacing connection. The method includes removing the heater core in a direction of extraction, the direction of extraction being orthogonal to the direction of insertion.

A method for servicing a heater core installed in a heating, ventilation, and air-conditioning (HVAC) assembly for a motor vehicle includes removing a sealing attachment from an interfacing connection interfacing with the heater core. The method includes sliding the heater core in a direction of insertion. The method includes disconnecting, from the heater core, the interfacing connection. The method includes removing the heater core in a direction of extraction, the direction of extraction being orthogonal to the direction of insertion.

Methods and systems to dissipate heat in a vehicle include a first condenser portion, and a second condenser portion arranged parallel with the first condenser portion. The system includes a fan arranged parallel with the first condenser portion and the second condenser portion. The fan draws air flow from the first condenser portion and the second condenser portion. The system also includes a radiator arranged substantially perpendicular with the first condenser portion and the second condenser portion, and one or more covers controlled to an open or closed position. A controller controls the position of the one or more controlled covers.

An air-conditioning unit includes an air-conditioning case, a blower, and a cooling heat exchanger disposed at a position upstream of the blower. The blower includes a rotational shaft and a suction opening. The cooling heat exchanger includes a facing portion that overlaps with the suction opening in the axial direction and a non-facing portion that does not overlap with the suction opening in the axial direction. The air-conditioning case includes a projected region that is virtually formed by projecting the facing portion toward an upstream side of the air-conditioning case along the axial direction. The air-conditioning case defines introducing openings at positions outside of the projected region. At least a first one of the introducing openings is located on a side of the projected region opposite to at least a second one of the introducing openings.

A heating, ventilation, and air conditioning (HVAC) system for a vehicle may include: a casing having an inlet and a plurality of outlets; an evaporator disposed within the casing; a heater core disposed behind the evaporator within the casing; and an air mixing door disposed between the evaporator and the heater core. In particular, the heater core and a rear wall of the casing are spaced apart from each other by a first distance, the evaporator and the heater core are spaced apart from each other by a second distance, and the first distance is greater than the second distance.

Disclosed is a vehicle air conditioner, wherein an air conditioner of an integrated heat pump system enables the improvement of cold air and warm air mixing characteristics so as to decrease left-right temperature differences, enables the implementation of independent left-right air conditioning, and enables the sufficient securement of an interior space.

A method for servicing a heater core installed in a heating, ventilation, and air-conditioning (HVAC) assembly for a motor vehicle includes removing a sealing attachment from an interfacing connection interfacing with the heater core. The method includes sliding the heater core in a direction of insertion. The method includes disconnecting, from the heater core, the interfacing connection. The method includes removing the heater core in a direction of extraction, the direction of extraction being orthogonal to the direction of insertion.