Where to place the industrial evaporative cooler?

Heat, humidity, and stale air can negatively impact productivity and health in workplaces. These environments often feature continuous machine operation and furnaces generating heat, making it challenging to maintain productivity, especially in summer.

To create an ideal microclimate for worker health, you can choose between an air conditioning system or fixed evaporative coolers.

Industrial evaporative coolers are the most effective solution for summer cooling in large industrial spaces, warehouses, commercial areas, sports facilities, laboratories, greenhouses, hangars, and railway workshops.

These devices are a valid alternative to traditional air conditioning systems as they have lower costs and do not use any refrigerant gases or f-gases, which are harmful to the environment.

This article explores a frequently asked question by customers and installers: where to place the cooler?

How does evaporative cooling work?

Evaporative cooling, also known as adiabatic cooling, exploits a natural thermodynamic principle called “adiabatic transformation.”

This principle allows air cooling through the natural process of water evaporation. The units draw hot air from the outside, which passes through water-saturated honeycomb filters, releasing part of its heat during water evaporation and lowering its temperature. The cooled air is then introduced into the workplace, potentially lowering the perceived temperature by up to 10°C.


The absence of refrigeration machinery minimizes energy consumption and allows for the treatment of large volumes of air.
Evaporative cooling systems also help to:

  • improve workers’ physical and mental well-being;
  • increase productivity;
  • enhance workplace safety by reducing the likelihood of accidents;
  • renew the air in various departments through continuous fresh air intake;

Unlike traditional air conditioning systems, evaporative coolers:

  • Do not emit CO2 as they do not use refrigerant gases or f-gases;
  • operate with open doors and windows, which is crucial in environments where these openings tend to remain open for extended periods during the day;

Would you like to know more about the differences between a traditional air conditioning system and an evaporative cooler? Learn more in the dedicated article.

What is the difference between a fan and an evaporative cooler?

Factors to consider for cooler installation

Before deciding where to position a water cooler, consider several aspects. Among the main ones are:

  1. the external temperature during summer and the internal temperature;
  2. the height of the building and the arrangement of air diffusers;
  3. the amount of air exchange needed based on the type of activity;
  4. the openings for expelling stale air;
  5. the presence of heat sources (machines, furnaces, etc.)
Internal and external temperature

For effective operation of evaporative coolers in industrial buildings, it’s essential to closely monitor both internal and external temperatures.
Internal temperature affects worker comfort and production efficiency,
while external temperature provides the environmental context in which the cooler operates. An accurate analysis of temperature variations helps to properly adjust the coolers to maintain optimal conditions inside the building.

Building height

The height of the building is another crucial factor in designing an adiabatic cooling system. Industrial buildings require evaporative coolers with high ventilation capacity proportional to the building’s height to ensure even distribution throughout the space. A thorough evaluation of the building’s height helps determine the optimal number and placement of water coolers to maximize cooling efficiency.

Air exchange quantity

The air exchange quantity in the industrial building directly affects air quality and worker comfort. Evaporative coolers help increase air exchanges through the ventilation process, ensuring a constant supply of fresh air in the workplace. Carefully evaluating the required air exchange quantity allows for the correct sizing of coolers and optimization of airflow within the building.

Exhaust air outlets

Exhaust air outlets are critical in the design of the cooling system. Ensuring effective expulsion of stale air from the building reduces humidity accumulation and ensures a safe and healthy work environment. Installing appropriate exhaust air outlets helps maintain an optimal balance between fresh air intake and the expulsion of stale air from the ventilation system.

Heat sources

Identifying and assessing heat sources within the work environment is essential to determine the position and power of evaporative coolers. Machines in operation, production processes, and other activities generate heat, increasing ambient temperature and compromising worker comfort.

Placing evaporative coolers near heat sources allows for rapid cooling of critical areas and maintaining optimal conditions within the building. This is important not only for personnel but also for the proper functioning of machinery, which could overheat and block due to prolonged high temperatures.

Where to place the cooler?

Evaporative coolers can be placed on the roof or walls. This choice depends on several factors, which are detailed below.

Roof coolers for industrial buildings

Roof-mounted evaporative coolers are installed on the building’s roof. The transition between the exterior and the interior mainly occurs through skylights or holes created specifically to allow the passage of the metal duct.

They are ideal for industrial, commercial, sports, railway, and agricultural environments with a height of less than 6 meters to ensure optimal performance and can cool a large area uniformly without dispersions.

Wall-mounted water coolers

Wall-mounted water coolers are the simplest and most efficient solution for cooling industrial and commercial environments with great heights. Often these buildings exceed 6-8 meters in height. In such conditions, wall-mounted evaporative coolers can be installed at the optimal height without creating thermal discomfort within the work environment.

Wall-mounted industrial coolers adapt to different solutions, as it is sufficient to have a window for the expulsion of stale air.

Air distribution systems of evaporative coolers

Another aspect to consider in designing an adiabatic cooling system is the air distribution method.

Before deciding on the type of distribution system to use, consider three fundamental aspects:

  1. Do I want to focus on specific work areas or cool the entire building uniformly?
  2. What are the geometry and height of the building?
  3. Are there elements that create interferences? (First and foremost, the presence of an overhead crane acting as a barrier)

Clear answers to these three questions allow for precise determination of the most effective solution.

Air distribution can mainly occur through three types of elements:

  • Multi-outlet diffusers from above
  • Flat wall diffusers
  • Microperforated fabric ducts

Let’s delve deeper into the differences.

Multi-outlet diffusers from above
  • Suitable for roof or wall-mounted coolers
  • Positioned to best distribute large volumes of air
  • Ideal for cooling specific areas of the building
  • Allow the direction of airflow to be adjusted by positioning the deflector louvers
Flat wall diffusers with a double row of adjustable vanes
  • Suitable for wall-mounted coolers
  • Ideal for very high environments with significant interferences such as shelves and overhead cranes
  • Positioned in corridors to avoid creating thermal discomfort for personnel
  • Louvers can be adjusted based on needs
Microperforated fabric ducts
  • Suitable for wall-mounted coolers
  • Ideal for environments with low heights for uniform air distribution
  • Custom designed to ensure proper diffusion
  • Optimal in environments with many people performing static work

Industrial evaporative cooler Eucold

The Eucold water evaporative cooler is the most natural, effective, and economical solution for summer cooling of medium to large industrial spaces, warehouses, hangars, commercial and sports areas, laboratories, and railway workshops.

It ensures fresh and healthy air through continuous fresh air intake, saves up to 78% on electricity compared to traditional air conditioners, and does not use any f-gases.

If you are interested in learning more about Eucold evaporative coolers produced by Carlieuklima and want personalized advice based on your needs, do not hesitate to contact us.

Our team is ready to assist you with a consultation and provide all the necessary information to ensure an optimal work environment. Discover more about our cooling solutions and contact us today!