Evaporative Coolers: Do They Make a Difference in Humid Climates?

Evaporative coolers, also known as swamp coolers, are an alternative to traditional air conditioning systems that use the process of evaporation to cool the air. They work by pulling in hot and dry air, passing it through wet pads, and blowing cooled and moist air into the space. These cooling systems have been around for centuries and are popular in many regions, but their efficiency can be affected by humidity levels. In this blog post, we will discuss whether evaporative coolers make a difference in humid climates and whether they are used in the southern states of the US.

The impact of humidity on evaporative coolers

Evaporative coolers rely on the process of evaporation to cool the air, which means that they are most effective in dry climates. In humid climates, the air is already saturated with moisture, which can affect the efficiency of the cooling process. However, even in high humidity levels, evaporative coolers can still provide benefits. They can still lower the temperature of the air and add humidity, which can make the air feel cooler and more comfortable.

The use of evaporative coolers in Southern states of the US

The southern states of the US are known for their hot and humid climates. Traditional air conditioners are widely used in these regions, but evaporative coolers, while less common, are becoming increasingly popular. There are several reasons why evaporative coolers may not be as common in these areas. One reason is that the humidity levels can make the cooling process less efficient. Additionally, traditional air conditioners are more effective in humid climates, and therefore, are more preferred by most homeowners and business owners.

The benefits of using an evaporative cooler in hot and humid climates

Even though evaporative coolers may not be as efficient in humid climates, they can still provide benefits. One of the most significant benefits is that even a modest reduction in temperature can make a big difference in comfort when outside temperatures exceed 90 degrees Fahrenheit. Swamp coolers can make the heat of the southern summer tolerable when used in outdoor spaces like patios, workshops, and restaurants.

Additionally, evaporative coolers can improve air quality by adding humidity to the air, which can help to reduce the spread of viruses and other airborne illnesses. They also can provide cost savings by reducing energy costs and lower maintenance costs.


In conclusion, evaporative coolers can make a difference in humid climates, but their efficiency may be affected by high humidity levels. They are hugely popular in the dry southwestern states of the US, but their fanbase is growing among the barbecuing and tailgating sets in the South. If you’re living in a hot and humid climate and you’re looking for an alternative cooling solution, an evaporative cooler is worth considering. The temperature reduction afforded by a swamp cooler can make a big difference in scorching summer temperatures, especially when compared to a traditional box fan.

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