Evaporative coolers, sometimes referred to as "swamp coolers", don't have a compressor or condenser. Liquid water is evaporated on the cooling fins, releasing the vapor in to the cooled space. The temperature of your incoming air is minimized, but It's also much more humid, so the total warmth (sensible warmth https://docs.google.com/spreadsheets/d/14Zqd0FEGkdjJlcohp4SFWeSZ9M4AIBFQpIDlHrjqztI