Does using hot water in a swamp cooler cool the air better?

Using hot water in a swamp cooler does not cool the air better; in fact, it can reduce its cooling efficiency. Swamp coolers work by evaporating water to cool the air, and warm water may not evaporate as effectively as cooler water. Ideally, using cool water enhances the evaporation process, leading to more effective cooling. For optimal performance, it's best to use cold or room temperature water.