Can you make an evaporative cooler work in humid environments?

If you believe your evaporative cooler is adding too much additional humidity to the environment, try the following:

  1. Open a door or window – evaporative coolers need fresh air to work at their best.
  2. Use the water adjustment valve (all Portacool products have these) to restrict the water flow over the evaporative media. While this does reduce the efficiency (also known as max cooling potential), it is a way to limit additional humidity.