the barrier wall 66 which provides an insulation against heat transfer a base pan assembly 70 is provided as a mounting platform for a large number of the components of the room air conditioner the base pan assembly 70 is shown in isolated detail in fig8 10 in those figures it is clearly illustrated that the base pan assembly 70 comprises the assembly of a contoured base pan sheet 72 and a number of vertically oriented fastening means 75 such as threaded studs preferably the studs are permanently secured to the base sheet 72 by appropriate fastening means such as metal cinching specifically there are provided two upwardly projecting studs 76 to be used in securing a condenser shroud 78 four studs 80 for securing a motor mount 82 three studs 84 for securing the compressor 62 and one stud 86 for securing the barrier wall 66 the base pan assembly 70 also includes a hand grip portion 90 secured to a front edge thereof which assists a user in moving the assembled air conditioner in and out of a protective outer sheath 92 fig1 the base pan sheet 72 contains a number of contoured areas which provide various functions a left side channel 96 and a right side channel 98 are depressed below the elevation of a forward bottom wall portion 100 of the base pan sheet 70 these channels lead rearwardly to a depressed rearward reservoir area 102 and serve to receive and direct collected condensate which has dripped from the evaporator coils 44 a further depression 104 in the reservoir area 102 acts as a well or sump to collect condensate in the specific area to be picked up by a slinger ring 106.