An analysis is proposed for predicting the condenser wall temperature profile showing the effect of functions such as concentration of noncondensable gases, type of working fluid, condenser wall material, and cooling medium. A prediction of the heat rejected ratio of a condenser operating with noncondensable gas present to one with pure vapor is given. The working fluids considered were Arcton 113 and acetone. The noncondensable gases were nitrogen and carbon dioxide. The theoretical results obtained were checked with some experimental results using the above fluids, and an agreement was obtained.