Dry air gives evaporative cooling a stronger foothold in Merkel
Evaporative coolers work by passing air through wet pads, where evaporation draws heat from the incoming air. Merkel’s dry conditions give that process room to work, so a properly maintained cooler can lower the temperature of moving air more effectively here than it does in a humid climate.
That cooling changes with the weather. When humidity rises during a stormy or damp interval, the air already holds more moisture and the cooler has less evaporation available to use. The unit can still move air, but it does not hold the same steady indoor conditions as refrigerated air conditioning in every stretch of weather.
Dust and wind exposure also make regular upkeep matter. Pads collect deposits, and mineral-bearing water leaves build-up in the pan, pump and water distribution parts. A cooler’s fit for a building depends on its ventilation layout, the condition of its water supply, how it will be used through the seasons and whether its pads and water-side components will be kept up. Before freezing weather, retained water needs attention so it does not damage the unit’s components.