The paper, "Multi-objective optimization of double effect series and parallel flow water-lithium chloride and water-lithium bromide absorption refrigeration systems" by Konwar et al. [Energy Convers. Manage. 180 (2019) 425-441], presented a genetic algorithm based multi-objective optimization tool along with its applications, which are found highly erroneous and conveying wrong information. Such issues are explained here in detail in order to prevent readers from misleading.