A swamp cooler is a type of evaporative cooler that uses humidity and water evaporation to cool air. Swamp coolers work best in dry climates because the high humidity can cause the unit to become clogged with particles and stop working. Another common problem with swamp coolers is when the pads get dirty and stop cooling the air. Pads can be cleaned with a garden hose, but they need to be completely dry before reuse.

One common reason a swamp cooler stops working is because the fan blades get clogged with dust and debris. When this happens, the fan can't spin properly and the cooler can't function. Another reason a swamp cooler might stop working is if the water level gets too low. If there's not enough water in the tank, the air won't be cooled as effectively. Finally, a swamp cooler might stop working if there's a problem with the motor or some other component of the unit. If this is the case, you'll need to call in a professional to repairs it.