Portable Evaporative Coolers – Complete Guide

What are Portable Evaporative Coolers?

Portable Evaporative Coolers are devices designed to provide efficient and environmentally friendly cooling.

They are ideal for both small spaces and larger environments such as warehouses, factories, shopping malls, or large work areas.

Additionally, these systems utilize water evaporation technologies to cool the surrounding air, eliminating harmful chemical refrigerants, making them a sustainable and cost-effective option for air conditioning large spaces.

Furthermore, thanks to their portable design, they offer easy mobility within facilities, facilitating their use in different areas according to cooling needs.

Are Portable Eco-Friendly Cooling Units Air Conditioners?

Portable evaporative coolers are not technically portable air conditioners in the traditional sense.

Although both devices are designed to provide cooling, they operate differently and have different applications.

Portable air conditioners use compressors and refrigerants to cool the air, while evaporative coolers, often called adiabatic coolers or air coolers, work by the process of water evaporation to reduce the surrounding air temperature.

Portable evaporative coolers are more efficient in areas with dry climates and are also more cost-effective to operate than traditional air conditioners.

While both types of devices can be portable, it is important to understand the differences in their operation and effectiveness based on specific cooling needs and the environment in which they will be used.

During the summer, it is possible to cool a wide range of spaces, including factories, work areas, outdoor events, event tents, industrial warehouses, terraces, sports facilities, tennis clubs, golf courses, equestrian clubs, among others.

Portable evaporative coolers have proven to be highly effective in various applications, from agriculture, horticulture, bars, and terraces, to manufacturing, industry, businesses, entertainment, sports, and mechanical workshops. Click here to see usage scenarios and discover how these devices can adapt to your needs.



Does Essential Cool offer a rental option for cooling equipment for a specific period of time?

Our equipment is available for rental for a demo, by month, season, or for specific events.

Interested in learning more about our rental options?

Get more information right here.

Additionally, at the end of the summer or hot season, you will always have the opportunity to opt for purchasing the equipment you have rented.

Interested in this option?

Don’t hesitate to contact us! Our team of professionals is here to provide personalized advice and answer all your questions.

What do I need to do to store my unit during the winter season?

Properly storing your portable evaporative cooler unit during the winter season is important to maintain its good condition and prolong its lifespan. Here are some steps you can follow:


Before storing the unit, make sure to clean it thoroughly to remove any accumulated dirt, dust, or residues.

This will help prevent mold or bacteria growth during storage.


It is important for the unit to be completely dry before storing it. You can use a dry cloth or leave it outdoors for a while to ensure there is no moisture inside.

Power Disconnection

Disconnect the unit from any power source and make sure it is turned off before proceeding with storage.

Water Drainage

If your portable evaporative cooler has a water tank, make sure to completely drain it to avoid stagnant water accumulation that may cause damage or unpleasant odors.


To protect the unit from dirt and dust while it is stored, you can cover it with a cover or breathable fabric.

This will help keep it in optimal conditions for the next season of use.

Proper Storage

Store the unit in a cool, dry place protected from the elements, such as a warehouse or storage room.

Make sure it is out of reach of any potential moisture sources or extreme temperatures.

By following these steps, you can safely store your portable evaporative cooler unit and ensure it is ready for use when the next hot season arrives.

What should I do if my unit is not cooling the air?

If your portable evaporative cooler unit is not cooling the air properly, here are some steps you can take to try to troubleshoot the problem:

Check the Settings

Make sure the unit is properly configured and operating in the correct cooling mode. Some units have different speed settings or operating modes that may have been adjusted incorrectly.

Verify Water Supply

Ensure that the unit has enough water in its tank.

If the water level is low, the cooling capacity may decrease. Also, check for any obstructions in the water supply that may be affecting the flow.

Limpieza de evaporativos portatiles

Cleaning the Evaporative Panels

Dirty or clogged evaporative filters can reduce the effectiveness of the evaporative cooler.

Remove the evaporative panels and clean them according to the manufacturer’s instructions.

If the honeycomb panel is very dirty or damaged, consider replacing it.

Proper Ventilation

Make sure the unit is located in a well-ventilated area and is not obstructed by objects that may block the airflow.

Also, check that the ventilation grilles are clean and clear.

Regular Maintenance

Perform regular maintenance on your portable evaporative cooler unit, including periodic cleaning of the filters and checking for any possible obstructions in the system.

If none of these options work, please contact our offices, where we will be happy to help you resolve any issues with your unit. Essential Cool. +(34) 93 197 72 28 or by email info@esencialcool.com

What is the difference between “Evaporative Cooling” and “Misting Systems”?

“Misting Systems” or misting systems spray fine water particles into the environment, which can result in nearby people or objects becoming damp or wet.

In contrast, Esential Cool’s evaporative units not only prevent unwanted moisture on surrounding people and objects but also offer effective air cooling thanks to Evaporative Cooling technology.



Want to know more about the Portable Evaporative Coolers – Complete Guide. Read more

What can I do if my unit smells strange?

It is likely that any new unit will go through a phase of strange smell during the first week.

Subsequently, the smell should completely disappear.

If the unit is not new and emits an unpleasant odor when turned on, here are some actions you can take to address the problem:

Cleaning the Filter and Water Tank

The unpleasant odor may be due to the accumulation of dirt, dust, or bacteria in the filter or water tank.

Clean the panels and empty and clean the water tank following the manufacturer’s instructions.

Water Tank Disinfection

To eliminate bacteria or fungi that may be causing the odor, you can disinfect the water tank using specific products for evaporative cooler cleaning or a water and vinegar solution.

Make sure to rinse the tank well after disinfection.

Replacement of Evaporative Panels

If the odor persists after cleaning the filter, consider replacing it with a new one. Dirty or worn panels can contribute to unpleasant odors.

Ventilation Check

Make sure the unit is properly ventilated and not obstructed by objects that may block airflow.

Insufficient ventilation can contribute to odor accumulation.

Avoid Stagnant Water

Avoid leaving stagnant water in the tank for extended periods, as this can encourage the growth of bacteria and fungi that cause bad odors.

How often should evaporative pads be replaced?

It depends on the quality of maintenance and frequency of use.

Evaporative pads generally last up to 5 years.

The frequency of replacing evaporative panels in an evaporative cooler depends on several factors, including the quality of water used, the frequency of unit use, and environmental conditions.

Prolonged use of evaporative panels can lead to the accumulation of minerals, sediments, and other residues that can reduce cooler efficiency and affect air quality.

Additionally, over time, panels may become less effective at retaining and distributing water, which can decrease their ability to effectively cool the air.

If you notice a decrease in cooling performance from your evaporative cooler or if the padas are visibly worn or damaged, it may be necessary to replace them before the recommended period.

How long will the water last in the supply tank?

If the unit does not have a direct water source, the water in the tank is likely to evaporate within approximately four to eight hours of continuous use.

However, this period may vary depending on the unit’s size, power, and water tank capacity.

Similarly, the rate of evaporation may vary depending on temperature, ventilation, and relative humidity of the environment.

It is recommended to have a direct water source, according to the product manufacturer’s instructions.

Each unit is equipped with a valve or float that regulates water flow or passage when the recovery tank is filled.

Why cool spaces with Essential Cool’s portable evaporative coolers?  What are the benefits?

Cooling spaces with Essential Cool’s portable evaporative coolers offers several significant benefits.

Energy Efficiency

Portable evaporative coolers consume less energy than traditional air conditioners, resulting in significant energy cost savings.

Low Operating Cost

In addition to being more energy-efficient, evaporative coolers typically require less maintenance and have lower operating costs compared to conventional air conditioners.

Environmental Respect

Evaporative coolers use water as a coolant instead of harmful chemicals, making them a more environmentally friendly and sustainable option for cooling spaces.

Increased Relative Humidity

Unlike air conditioners that can dry the air, evaporative coolers slightly increase the relative humidity of the environment, which can be beneficial for respiratory health and personal comfort.

Versatility and Portability

Portable evaporative coolers are easily transportable and can be used in a variety of indoor and outdoor environments.

This makes them ideal for a wide range of applications, from homes and offices to outdoor events and industrial work areas.

Ease of Installation and Use

Portable evaporative coolers are typically easy to install and use, making them a convenient option for those looking for a quick and effective cooling solution.

In summary, cooling spaces with portable evaporative coolers offers a unique combination of energy efficiency, low operating costs, environmental benefits, and personal comfort, making them an attractive option for many individuals and businesses.

What is the difference between an Air Conditioner and Portable Eco-Friendly Coolers?

Essential Cool evaporative units are distinguished by not using compressors or refrigerant gases.

Additionally, they can be used in outdoor spaces such as patios, terraces, and gardens.

This allows for an 80% energy consumption savings.

Their use is extremely simple, as they do not require any type of installation.

Just take them out of the packaging, fill them with water, plug them in, and start enjoying a cool and comfortable environment!

Do Portable Eco-Friendly Coolers Require Installation?

No, the units practically do not require any installation.

All Essential Cool units come ready to use; you just need to add tap water and plug in the equipment!

How much humidity is produced by a unit?

Approximately 2% to 5%, as the produced humidity depends on the temperature and humidity present in the environment.

It is essential that environments where portable evaporative coolers are used are well-ventilated or have forced air extraction.

If not, the environment will become humid, and the evaporative coolers will cease to be effective. But in well-ventilated environments, the increase in humidity is completely imperceptible.

If I use ice in the water tank, will the unit cool more?

Yes, adding ice to the water tank of an evaporative cooler can help cool the air more effectively under certain conditions.

The ice helps reduce the temperature of the water in the tank, which in turn lowers the air temperature passing through the evaporation system.

This can be especially useful in areas where the ambient temperature is high, and the air is dry since the additional cooling provided by the ice can help create a cooler and more comfortable environment.

However, it is important to note that the additional cooling effect may be limited and will vary depending on various factors such as the size of the water tank, the power of the cooler’s fan, ambient temperature, and humidity.

Can portable evaporative coolers produce legionella?

Portable evaporative coolers have a very low risk of producing legionella compared to systems with stagnant water cooling, such as cooling towers.

However, although the risk is almost negligible, it cannot be completely ruled out.

Legionella is a bacterium that can grow in stagnant water systems and aerosolize into the air, posing a health risk if inhaled.

In evaporative coolers, water continuously evaporates and is ventilated into the environment, significantly reducing the possibility of legionella accumulating in large quantities.

However, if the water in the tank is not properly maintained, there could be a risk of bacterial proliferation, although this risk is very low.

To reduce the risk of legionella proliferation in a portable evaporative cooler, it is recommended to follow some maintenance practices, such as:

  • Regularly clean and disinfect the water tank according to the manufacturer’s instructions.
  • Use clean and fresh water in the tank.
  • Empty and clean the tank when the cooler is not in use for extended periods.
  • Avoid leaving stagnant water in the tank for long periods, especially in warm environments where bacteria can multiply more easily.

By following these precautions and properly maintaining the equipment, the risk of legionella proliferation in portable evaporative coolers can be practically eliminated.

However, as with any equipment that uses water, it is important to consider hygiene and maintenance to ensure safe and effective operation.

Bactericida para evaporativos_ige

Bactericides: Additionally, there are tablets and bactericidal products that can be placed in the water tank of the evaporative cooler to provide complete prevention.

Furthermore, at Essential Cool, we have units that come with an integrated ultraviolet lamp that acts as a bactericide and prevents legionella proliferation.

What is the electrical consumption of a portable evaporative cooler?

It is important to understand that the energy consumption of a professional portable evaporative cooler can vary greatly depending on its size, features, and the cooling requirements of the specific application.

A professional portable evaporative cooler can consume between 200 and 1500 watts of power.

Additionally, the energy consumption of a professional portable evaporative cooler often depends on the airflow and cooling capacity.

Higher airflow rates and greater cooling capacities require more power to operate effectively.

However, the consumption of a portable evaporative cooler can be up to 90% lower than that of an air conditioner.

Let’s look at some examples:


7P – 200w

15P – 680w

22P – 750w

30P – 1,100w


M902 – 510w

M602 – 960w

M502 – 1,100w

Portable Evaporative Coolers – Complete Guide

Now that you have the Portable Evaporative Coolers – Complete Guide, you will be able to choose the most suitable model for your facilities.

Do you have any other questions?

Our technical department is available from 10:00 a.m. to 6:30 p.m.

Monday through Thursday and from 10:00 a.m. to 2:30 p.m. on Fridays, by calling +34 932 312 810 or by email at info@esencialcool.com

Portable evaporative coolers are an efficient and versatile solution for industrial and commercial environments.

From their ability to improve air quality to their energy efficiency and ease of use, these devices offer a range of benefits that make them stand out compared to traditional cooling systems.

If you are looking for a cost-effective and environmentally friendly way to keep your spaces cool and comfortable, consider investing in portable evaporative coolers.

Your team and your budget will thank you.

Ak to our specialists.

Daniel Gerardo Fischman

Contact us to elevate your workspace comfort!

Whether it’s choosing the perfect evaporative cooler or getting expert advice, we’re here to assist.

Visit our website at www.esencialcool.com

Call/WhatsApp us at +(34) 633 938 824

Drop us an email at sales@esencialcool.com.