Swamp Cooler Blowing Hot Air: What to Check First

Possible causes include a dry or poorly wetted cooling pad, inadequate water delivery, blocked airflow or weather conditions that reduce evaporation. Check the model manual for diagnosis.

Evaporative coolers need air to move through and out of the space. Follow the manufacturer's ventilation guidance for your specific unit.

Evaporative cooling performance depends on air conditions, including humidity. The manufacturer may describe operating limits for the model.

Stop using the unit and seek qualified service if you find electrical damage, leaks near electrical parts, unusual burning smells or a fault the manual does not resolve.