{"id":4887,"date":"2026-03-11T09:18:05","date_gmt":"2026-03-11T09:18:05","guid":{"rendered":"https:\/\/blizzcool.es\/blog\/sin-categorizar\/what-is-an-evaporative-cooler-and-how-does-it-work\/"},"modified":"2026-03-11T09:18:05","modified_gmt":"2026-03-11T09:18:05","slug":"what-is-an-evaporative-cooler-and-how-does-it-work","status":"publish","type":"post","link":"https:\/\/blizzcool.es\/en\/blog\/evaporative-cooler\/what-is-an-evaporative-cooler-and-how-does-it-work\/","title":{"rendered":"What is an evaporative cooler and how does it work?"},"content":{"rendered":"

If this summer you’re looking for an efficient alternative to air conditioning for your industrial facility, workshop, or workspace, you’ve probably heard of evaporative cooling. In this article, we explain what it is, how it works, and why more and more companies in Spain are opting for this system. And if you already know it’s what you need, you can buy an evaporative cooler<\/a> directly from our store. <\/p>\n

What is an evaporative cooler?<\/h2>\n

An evaporative cooler is a climate control unit that reduces air temperature by leveraging the natural process of water evaporation. Unlike conventional air conditioning, it doesn’t use compressors or refrigerant gases: its only “fuel” is water. <\/p>\n

The operating principle is the same one used for centuries by the ‘botijo’ (earthenware jug): when water evaporates, it absorbs heat from the surroundings and cools them. Evaporative coolers apply this phenomenon in a controlled and efficient way to cool large volumes of air with very low energy consumption. <\/p>\n

How does an evaporative cooler work?<\/h2>\n

The operation of an evaporative cooler always follows the same process:<\/p>\n

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  1. Outdoor air intake.<\/strong> A powerful fan draws in hot ambient air.<\/li>\n
  2. Passage through wet pads.<\/strong> The air passes through cellulose or fiber pads soaked in water. Upon contact, the water evaporates and absorbs heat from the air. <\/li>\n
  3. Cold air discharge.<\/strong> The resulting air, 6 to 15 \u00b0C cooler than the outside air, is distributed throughout the space to be cooled.<\/li>\n
  4. Continuous air exchange.<\/strong> Unlike air conditioning, an evaporative cooler always works with fresh outdoor air, constantly renewing the environment instead of recirculating it.<\/li>\n<\/ol>\n

    For the system to work correctly, it’s important that the space has air outlets: doors, windows, or extractors that allow hot air to escape as cold air enters. This is especially easy to achieve in industrial facilities, workshops, and warehouses. <\/p>\n

    \"evaporative<\/p>\n

    Types of Evaporative Coolers<\/h2>\n

    Not all evaporative cooling units are the same. There are three main categories based on their cooling system and format: <\/p>\n

    Direct evaporative cooling.<\/strong> This is the most common system. Air passes directly through wet pads, which cools and humidifies the environment simultaneously. It is most efficient in dry and hot climates, such as those in inland Spain. <\/p>\n

    Indirect evaporative cooling.<\/strong> Air is cooled through a heat exchanger without direct contact with water, so it does not increase ambient humidity. It is more suitable for areas with high humidity. <\/p>\n

    Portable evaporative cooler.<\/strong> This is the compact version with no fixed installation. A portable evaporative cooler can be easily moved from one space to another, making it a very flexible solution for businesses with occasional or seasonal cooling needs. Industrial portable models, like Blizzcool’s, are designed to cover hundreds of square meters with full mobility. <\/p>\n

    Advantages of evaporative cooling<\/h2>\n

    The growing popularity of evaporative coolers in the industrial sector is no coincidence. These are their main advantages over other systems: <\/p>\n