Ram ProMaster City

Rear VAC

Rear auxiliary VAC tie-in system utilizes existing compressor and condenser for auxiliary cooling of cargo area.

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Rear VAC Unit

Webasto Oakland

The Oakland is a low-profile (4.9 inch), horizontal cooling unit.

The Oakland unit has a cooling capacity of 13,500 BTU. It can be mounted to cargo area ceiling, against bulkhead partition with air delivered rearward or against wall surface with air delivered inboard. These locations offer minimal refrigerant, coolant and condensate drain plumbing and wire harness routing.


Cooling Capacity13,500 BTU/h
Nominal Voltage12V
Max. Power Consumption @ 12V7.4A
Max. Air Flow Evaporator Blower265 cfm
Dimensions L x W x H

15.4 x 9.25 x 4.9 in

Weight 7.7 lbs.


Vehicle Integration


The Oakland VAC is tied into the Ram ProMaster City OEM front HVAC for cooling and utilizes the vehicle's existing in-line condenser and compressor. A Webasto machined aluminum T-Block connects the refrigerant loop to the factory from HVAC TXV.

Control Unit

Controller with on/off switch and variable fan speed is standard. The controller is packaged in-dash, or can be located anywhere inside the vehicle.