Absorption cooling systems offer a viable alternative for reducing the high electrical energy consumption associated with air conditioning (A/C) in buildings. Their ability to be powered by various thermal energy sources makes them particularly attractive for implementation in areas without access to the electrical grid. However, several factors have hindered the widespread adoption of these systems, including high initial investment costs, low efficiency, and operational limitations tied to site-specific conditions. This study investigates the integration of an earth-to-water heat exchanger to an absorption cooling system considering as case of study the remote community of Puertecitos, BC, Mexico, aimed at reducing freshwater consumption. The TRNSYS software was used to conduct a parametric study of the proposed system’s performance. The earth-water heat exchanger saves 8094 kg of water per year, which represents 23.8% of total annual water consumption. Based on the results, it can be concluded that the integration of an earth-water heat exchanger to an absorption cooling system is a technically viable option, because it saves significant amounts of freshwater and allows the system to operate within its nominal conditions for a longer period during high-demand days in the hot season.