Swamp Cooler Not Blowing Cold Air: Causes to Check

Check whether water is reaching the cooling media, whether the media is clean and whether the unit has adequate airflow. High humidity can also limit evaporative cooling.

During evaporative cooling, water should be distributed across the media as the manual specifies. If the media remains dry, check the water supply and pump safely.

Dust or mineral buildup can restrict airflow or water distribution. Switch off and unplug the unit before cleaning, and follow the manufacturer’s instructions.

Evaporative coolers bring cooled outdoor air into a space, so an outlet for existing air supports circulation. Use the ventilation arrangement recommended for the system.