A scrubber apparatus for a refrigerated transport container having a cargo space, the scrubber apparatus comprising: a regenerating adsorber configured to permit flow therethrough for adsorption or desorption of a controlled gas; an inlet manifold in fluid communication with a first side of the adsorber and an outlet manifold in fluid communication with a second opposing side of the adsorber, each manifold comprising: an interior gas port (318, 338) for fluid communication with interior gas in the cargo space; an exterior gas port (320, 340) for fluid communication with exterior gas outside of the cargo space; an adsorption control damper at the interior gas port (318, 338) for controlling selective fluid communication between the adsorber and interior gas; and a regeneration control damper at the exterior gas port (320, 340) for controlling selective fluid communication between the adsorber and exterior gas; at each manifold, a common actuator configured to actuate both the adsorption control damper (314, 334) and the regeneration control damper (316, 336) to move between an adsorption configuration, in which the adsorption control damper (314, 334) is open to permit an interior gas flow through the adsorber and the regeneration control damper (316, 336) is closed, and a regeneration configuration, in which the regeneration control damper (316, 336) is open to permit an exterior gas flow through the adsorber and the adsorption control damper (314, 334) is closed; a heater disposed upstream of the adsorber and downstream of the inlet manifold, and a heater controller configured to operate the heater in a first mode to heat interior gas upstream of the adsorber in the adsorption configuration, and to operate the heater in a second mode to heat exterior gas in the regeneration configuration. a regenerating adsorber configured to permit flow therethrough for adsorption or desorption of a controlled gas; an inlet manifold in fluid communication with a first side of the adsorber and an outlet manifold in fluid communication with a second opposing side of the adsorber, each manifold comprising: an interior gas port (318, 338) for fluid communication with interior gas in the cargo space; an exterior gas port (320, 340) for fluid communication with exterior gas outside of the cargo space; an adsorption control damper at the interior gas port (318, 338) for controlling selective fluid communication between the adsorber and interior gas; and a regeneration control damper at the exterior gas port (320, 340) for controlling selective fluid communication between the adsorber and exterior gas; an interior gas port (318, 338) for fluid communication with interior gas in the cargo space; an exterior gas port (320, 340) for fluid communication with exterior gas outside of the cargo space; an adsorption control damper at the interior gas port (318, 338) for controlling selective fluid communication between the adsorber and interior gas; and a regeneration control damper at the exterior gas port (320, 340) for controlling selective fluid communication between the adsorber and exterior gas; at each manifold, a common actuator configured to actuate both the adsorption control damper (314, 334) and the regeneration control damper (316, 336) to move between an adsorption configuration, in which the adsorption control damper (314, 334) is open to permit an interior gas flow through the adsorber and the regeneration control damper (316, 336) is closed, and a regeneration configuration, in which the regeneration control damper (316, 336) is open to permit an exterior gas flow through the adsorber and the adsorption control damper (314, 334) is closed; a heater disposed upstream of the adsorber and downstream of the inlet manifold, and a heater controller configured to operate the heater in a first mode to heat interior gas upstream of the adsorber in the adsorption configuration, and to operate the heater in a second mode to heat exterior gas in the regeneration configuration.