[en] The wall condensation models of MARS-KS and SPACE codes adopt the Colburn-Hougen diffusion method to solve for the liquid-gas interface temperature in the presence of noncondensable (NC) gases. Recent studies reported that there was an error in the vapor mass flux term when the models were implemented in the codes. This error causes the codes to underestimate the steam condensation rate. This tendency becomes more noticeable with the increase in the mole fraction of NC gases. In this study, we assess the modified condensation model of MARS-KS and SPACE codes. The calculation results of modified version of the codes (MARS-KS 1.3r1 and SPACE 2.16r1) are compared to those of the original version (MARS-KS 1.3 and SPACE 2.14) and the experimental data. The modified model predicts higher heat fluxes and HTCs than the original model due to the increase in the steam condensation rate. At relatively high air mass fraction, the modified model increases the discrepancy between the measured data and calculated values