Dorman 604-830 Air Door Actuator Recirculation HVAC Blend Door

The Dorman 604-830 is a direct-fit recirculation air door actuator designed to restore proper function to your vehicle's HVAC system. This actuator controls the recirculation door, which determines whether your climate control system draws fresh air from outside the vehicle or recirculates cabin air — a critical function for efficient heating, cooling, and defrost performance.

Dorman engineers this replacement to match the form, fit, and function of the original equipment actuator, making installation straightforward without the need for special tools or reprogramming in most applications.

Key Features:

• Controls the recirculation air door in the HVAC system for proper fresh/cabin air selection
• Direct OE replacement — designed to match original equipment specifications
• Helps eliminate common symptoms such as stuck recirculation mode, HVAC noise, or unresponsive air source selection
• Built to Dorman's OE FIX quality standards with improved materials where applicable
• Plug-and-play installation with no special programming required in most applications

A failed recirculation actuator can cause the climate system to blow outside air when recirculation is selected, or lock the system in recirculation mode, reducing defroster effectiveness. Replacing the actuator with the Dorman 604-830 restores full HVAC control and cabin comfort.