It is evident from these results that the rate of degradation also plays a crucial role in determining the optimal sorbent replacement time. For instance, the sorbent with 50% capacity loss after one year should be replaced after one year to achieve the lowest cost of capture. In contrast, the sorbent exhibiting a 10% capacity loss after one year (90% remaining) should be replaced at three-year intervals. These results underscore the critical importance of incorporating degradation rate measurements into a capacity fade economic model when determining the most economically viable sorbent replacement times in DAC processes.