A vehicle may include a roof and an air conditioning system. The roof may have an exterior surface, an interior surface, and an aperture extending through the roof between the exterior surface and the interior surface. The air conditioning system may include an exterior housing that is mounted to the exterior surface of the roof. The air conditioning system may also include an evaporator and an evaporator blower. The air conditioning system may further include an interior housing that is removably mounted to the interior surface of the roof and defines a mounted position and a removed position. When the interior housing is in the removed position, the evaporator and evaporator blower may be accessible for servicing from the interior of the vehicle.