Cold nights are the first sign that winter is coming. The best way to deal with the months of cold weather is to be prepared. If you have an evaporative or swamp cooler you will need to do a few things to get it ready for the winter. Why winterize a swamp cooler?
Prevent a frozen water line that may become damaged and will need to be replaced next summer
Prevent damage to the swamp cooler because of frozen water or rust