Established as an automotive A/C installation and repair shop in 1974, Global Parts Distributors, LLC (gpd) has evolved into a leading national brand of aftermarket automotive air conditioning system and heat exchange products.
Features & Benefits
Improved design uses higher strength nylon gears coated with superior lubricant, heavier duty motors and redesigned circuit boards to prevent burnouts
Precision replacements that mount in the existing position without modification
Plug and play and do not require any programming
Exceeds the design of OEM motors
Life cycle tested in excess of 10 thousand hours
Provide a more durable service life in the HVAC temperature control system
All About Actuators & Common Reasons for Failure (Video)
Which Actuator Do You Need?
RECIRCULATION
Controls the intake of air into the system, either bringing outside air in or using inside air in recirculation.
BLEND
Controls the temperature of the air flowing from the vents by mixing hot and cold air from the heater core and the evaporator core.
MODE
Controls which vents have air flow, i.e. Floor, Panel or Front, Defrost, or any combination of those.
Diagram:
Main vs. Auxiliary
The term "Main" refers to the air flow control of the Front Vents. The term "Auxiliary" refers to the air flow control of the Rear Vents.
Many actuators that control the air flow to the rear vents are still located in the front of the vehicle. Some larger and/or higher end vehicles may have Auxiliary air door actuators in the center console or in the rear of the vehicle.
Which Actuator Do You Need?
Additional Resources