Air Washer: Uses, Types, Features, Work

What is an air washer

An air washer is an air purifier that cleans the air using water to trap pollutants and impurities. Air washers typically consist of a fan that draws air through a series of damp pads or plates, where the water in the pads or plates absorbs dust, dirt, and other particles from the air. The air is then released back into the room, typically with higher humidity than before.

Air washers are often used in areas with high air pollution or dust levels, such as industrial facilities or construction sites. They can also be used in homes and offices to improve indoor air quality and increase humidity levels, which can be beneficial for people with respiratory problems or dry skin.

What is an air washer used for?

An air washer is used for air purification, humidification, and cooling. Its primary function is to improve indoor air quality by removing pollutants such as dust, allergens, and odors from the air.

Air washers are commonly used in industrial and commercial settings such as factories, warehouses, and data centers to improve air quality. Still, they can also be used in residential settings to improve the overall air quality in the home.

In addition to purifying the air, air washers can also humidify the air by adding moisture to the air. This can help reduce air dryness and alleviate symptoms such as dry skin, sore throat, and coughing. Some air washers also have cooling functions that can help lower the room’s temperature, making them versatile and useful tools for improving indoor air quality and comfort.

Types of Air Washers

There are different  types of air washers available in the Market:

Direct Air Washers

Direct air washers are also known as single-pass air washers, as they use a one-pass system where the air is washed once and then released back into the room. In direct air washers, the air is forced through a series of wet pads, where it is scrubbed clean by the water. The air is then released back into the room as purified , cool and humidified air.

Indirect Air Washers

In indirect air washers, the air is first passed through a Sensible heat exchanger, where it is cooled and then passed through a series of wet pads to remove pollutants. The purified air is then heated,if required , and released back into the room.

Innovated Multi pad Air Washers:

Normally Air washers come with single pad  and air filters on its air suction side.Now a days Muti pad Air washers called High Static cooling units are also available .The benefits of muti-pad air washers are manifold:

  • Compact in size ,hence less footprint
  • More pad area results in better cooling
  • Removable pad panels ,makes maintenance easy
  • Energy efficient

Both direct and indirect air washers have advantages and disadvantages, and the choice of which type to use depends on the user’s specific needs. Direct air washers are generally more efficient and less expensive but require more water and are less effective at removing certain pollutants. On the other hand, indirect air washers are more effective at removing impurities and require less water, but they are more expensive and require more maintenance.

Features of Air Washer

The features of an air washer can vary depending on the specific model and manufacturer, but some common characteristics of air washers include the following:

Water tank

An air washer typically has a water tank that holds the water used for washing the air. The tank size can vary depending on the model, and larger tanks can mean longer periods of operation between refills.

Air filter

An air washer may have a built-in air filter that captures larger particles before the air passes through the water. This can help extend the water filter’s life and improve air quality.The air filters normally used are of 10 micron filtering capacity made of washable  synthetic HDPE media.

Humidification and cooling 

An air washer can cool by evaporation and  add humidity to the air by using the water in the tank to humidify the air as it is washed.

Multiple speed settings

Many air washers come with multiple speed settings that allow the user to adjust the speed of the fan and the amount of air that is washed.

Automatic shut-off

Some air washers have an automatic shut-off feature that turns the unit off when the water tank is empty. This can help to prevent damage to the unit and save energy.

Energy efficiency

Many air washers are designed to be energy-efficient, with low power consumption and features like programmable timers and sleep modes.

How Air Washers Work

Air washers, also known as evaporative humidifiers or humidifying air purifiers, add moisture to dry indoor air while filtering out impurities such as dust, pollen, and other particulates.

The basic principle behind air washers is using a rotating drum or disk containing a wetted filter material. As dry air is pulled through the filter, the water on the filter evaporates, cooling and humidifying the air. The evaporative process also causes impurities in the air to become trapped in the filter, providing a basic level of air purification. The moist air is then blown out of the unit and circulated throughout the room, raising the humidity level and providing relief for people suffering from dry skin, allergies, or other respiratory issues.

To maintain effective operation, it is important to regularly clean and replace the filter material in an air washer to prevent the buildup of bacteria, mold, and other harmful contaminants.

What Are the Differences Between an Air Washer and an AHU?

An Air Washer and an Air Handling Unit (AHU) are two different systems used for indoor air treatment, with some similarities but also some key differences.

An Air Washer is primarily designed to cool ,humidify and purify the air by adding moisture to it and filtering out impurities. It uses a wet filter material to trap particles and pollutants while adding humidity to the air via evaporation. The air washer is often used in areas where the air is excessively dry, such as in data centers, printing facilities, and other industrial settings.

On the other hand, an Air Handling Unit (AHU) is a device that is designed to condition and circulate air throughout a building. It is typically composed of a blower, heating or cooling coils, filters, and dampers. The AHU can cool or heat the air, control the humidity, and distribute the conditioned air to various parts of the building via a network of ducts.

The AHU is a complex system that can be customized to meet specific indoor air requirements, such as the level of air filtration, temperature, and humidity control. It is commonly used in commercial buildings, hospitals, and other large structures requiring high air quality.

In summary, while an Air Washer focuses on air cooling ,adding humidity and purifying the air, an AHU is a more comprehensive system that is used for air conditioning and circulating the air throughout a building.


All you need to know about air washers are here, and we hope you got the idea about the Air washer, their usage, and their types. If you still need clarification or are trying to decide what is best, browse our products or visit @ for more information. Our team will help you out in making the best decision.

We look forward to helping you and making your Indoor environment comfortable and healthy. 



Eco-Friendly Air Coolers: What Makes Them So?


We might as well include heating and cooling in the list of man’s essential needs in the 21st century. Humans can suffer greatly from weather elements, so to cope we make use of various appliances to change the air we breathe in our homes.

Sometimes, a home, office, or outdoor space cannot stay cool because of the weather. There are some climates where the heat levels can be so high that they cause sickness.

We mostly use electrical appliances to control the temperature. Electric fans, air conditioners, and air coolers are the three most commonly used electrically powered cooling appliances in most households and offices.

The major appliances for temperature control in homes are air conditioners and air coolers. Some areas can get too hot during the summer months to run these machines at their maximum efficiency. The temperature of the room will naturally be cooler as a result; however, this has an impressive environmental impact.

The world is becoming hotter as a result of our quest for cooling, and there have been some studies conducted to find out just how much this is causing the environment. Considering the way we satisfy our cooling needs, this may seem paradoxical but makes perfect sense.

The air conditioner is usually the only source of cooling for households and organizations. Their efficiency when it comes to coping with any temperate condition is unmatched. Whenever conditions are right, they deliver massive amounts of cooling. Even amid a very uncomfortable temperature condition, they can deliver an optimal level of comfort to any interior space.

Even though they may look beautiful and deliver cold air efficiently, air conditioners have many flaws. It is well known that chemical coolers pose several problems (from their mode of operation to the amount of electricity they use).

Air coolers have been advocated for several years as alternatives to traditional cooling systems. If more households and organizations switch to these air cooling machines, the effects on the environment will be remarkable. Air coolers are a great alternative to air conditioners and there are multiple ways they can be used to save the planet.

Here Are Two Key Reasons Why Air Coolers Are Environmentally Friendly!

Coolers Rely On Evaporation to Cool

An air conditioner and an air cooler differ in this way significantly. While coolants or refrigerants are used in the former, evaporation is used in the latter. This means that with air coolers no harmful chemicals are released, which is contrary to what is observed with air conditioners.

Water molecules are attached to the molecules of cool air produced by air coolers, which are simply air conditioners that pass hot air through water-soaked pads. The air conditioner emits both chlorofluorocarbons (CFCs) and hydrofluorocarbons (HFCs) during its cooling process. Depletion of the ozone layer and additional consequences of global warming is caused by these compounds.

We cannot deny that air conditioners have significantly contributed to the release of pollutants into the atmosphere and the consequences they have on our planet. The reduction of their usage is the most effective way to save the world. Instead, use an air cooler!

The Air Cooler Uses Less Energy

Air coolers consume a lot less energy than air conditioners due to their simple design and the way they work. Some of them have been reported to deliver the same amount of cooling in a fraction of the time that it will take an air conditioner.

Economic considerations are what most people would look at. Utilizing an air cooler in a household or organization will help you save a lot of energy and in turn money!

Essentially, there is one way to reduce electricity consumption and help save the planet. Due to the reduced load on the electricity grid, energy used to supply homes and businesses will be less fossil fuel-based.

The Conclusion

A cooler has so many advantages over an air conditioner that you cannot ignore them. The environment will be impacted reasonably. Besides their economic benefits, they are also contributing to global preservation, making them attractive alternatives to households and office spaces. There is no reason not to use them in your area if your climate is ideal!

What are the Differences between Air conditioners vs Evaporative Coolers?


When it comes to cooling systems and applications, every single machine comes with its set of advantages. Now people are looking for machines that can help them curb their utility charges, save energy resources, and also remain eco-friendly. But, traditional cooling systems are not helping them with the respective properties.

It has been seen that the cooling systems are not being able to assist millions of workers who are providing services in different industries that include automotive, industrial, construction, agricultural, and more. The workers in these industries are exposed to huge amounts of heat stress every single day. But, all of them do deserve a comfortable and safe environment and this will certainly lead to better work productivity as well.

Evaporative Cooler and Air Conditioner: Difference In Detail

Air Conditioner
When it comes to air conditioners, it is used in the form of refrigerants to expel the moisture and heat from the respective space. These machines use fans so that they can use the conditioned air to enhance the indoor air quality and thermal comfort of that particular space. They are basically ducted and fixed systems that need bi-yearly maintenance by professionals to function exceptionally.

It is basically a system where coils will cool the air through chemical procedures that remove the moisture and heat through dissipation outdoors. These machines are operating at their best in the enclosed environments and it will eventually reduce the room temperature to the select temperature heedless of what the outdoor condition is. But there is a draw as well that comes with these systems and that is it requires thousands of money to get purchase and set up done with convenience.

Evaporative Cooler
When it comes to evaporative coolers, things are completely opposite when compared with traditional air conditions. It is also acknowledged as desert coolers or swamp coolers and will need fewer materials to function in terms of electricity and water. It doesn’t require much maintenance compared to traditional ones, so it will help you save a lot over a long period of time.

Another fascinating aspect that you get with evaporative air coolers is that you will not need enclosed environments. So, it becomes a perfect option for manufacturers where stress heat is a lot more compared to other places. It will not only keep the place in a good atmosphere but also it will enhance the air quality. This will keep the employee’s health in good condition and eventually boost productivity as well.

So, it is a great option for industries and companies where more open spaces are used for work operation. It will keep the space in good condition and most importantly will not cost you a lot as well.

Which one is right for you?
Hopefully, you are clear about both the devices. Evaporative air systems have to be your top choice if you are looking for air coolers. It will not only save you a lot but also help you with effective results. It is eco-friendly and will perfectly serve your purpose. If you are looking for a reliable company to assist you with evaporative air coolers then you can always reach out to Evapolers. You will surely be entertained with the best of products.

How to Choose the Best Industrial Air Cooler?

Best Indsutrial air coolers

Are you looking forward to purchasing an industrial air cooler? The demand for industrial air coolers has been very high in the last few years. It brings in a lot of benefits into play and this is why it has become one of the hot cakes in the present market. You will find a number of companies now investing in industrial air coolers as it gives them a lot of reason to bring the best out of their services.

Why Industrial Air Cooler

When it comes to industrial air coolers, it provides an effective and efficient cooling effect compared to all the other air conditions. When it comes to Industrial air coolers, it is also acknowledged as swamp coolers and also evaporative coolers. They are used to cover large scale industries with huge machines operating all around the clock. It proves to be an effective approach that will get the space chilled without any kind of hassle. This will keep the employees running and help you boost your productivity.

This is why the demand for the respective industrial air cooler has got high and the businesses around are looking for the best machine that can help them get the best out of it. This is why we are here to help. Below mentioned are a few of the tips that will make it easy for you to choose the right industrial air cooler that will ideal for your business, check it out:

Case material & thickness

The first and the important thing you must check while looking at an industrial air cooler is the material. It is important the material taken into use is fresh rather than being recycled. If the machine has been manufactured with the use of fresh material then it can be taken into usage for the next 10 years.

But, if the machine has been designed with the use of recycled material, then it will be hard to guess how it can operate. You might be able to use the same for the next 1 or 2 years. Another important aspect that you need to check with is thickness. The thicker it is the better the machine is in use.

Cooling pad

Another important aspect that you need to check with is the kind of cooling pad. The machine needs to have the right kind of cooling pad infused to get it running effectively. The size and thickness of the cooler will certainly be the thing to watch out for. If the cooling pad is thicker and bigger then it will certainly get the performance of the machine a lot more convincing.

Fan for Motor wiring

While looking for a reliable industrial air cooler, you must also check the kind of fan being used in the respective machine. To avail excellent cooling, it is important that your evaporative air cooler is infused with 100 percent copper wiring. You will find a number of manufacturers using aluminum wiring but that is not effective as copper wiring is and this will certainly make your decision-making process a lot more convincing.

Airflow volume

Another important aspect that you need to check with is the airflow volume because there are a number of companies who are misguiding with the value it presents. You will be stated that the air cooler will be giving you excellent flow but you might not get the result accordingly.

Wrap Up

So, these are the aspects that you need to check with while looking for an industrial air cooler. Doing the same will certainly help you make the right decision. If you are still looking for an industrial air cooler then you can consider making your purchase from Evapoler. Connect now!

Air Washer

Air Washer Print Image

Air Washer, an Air handling equipment designed to improve air quality and for comfort cooling of large & open industrial, institutional, and commercial spaces. The conventional Air washer is made of powder-coated Galvanised, puff insulated cabinet, have single electric motor driven Centrifugal Blower, electric control by a wired remote controller with single phasing, overload, and short circuit protection, Airflow capacities range from 6000 CFM to 100000 CFM. It is used as part of climate control and air quality systems. The static pressure and capacity can be designed as per requirement.

Air Cooler Suppliers and Services


Evapoler produces best in class Evaporative air coolers (also known as swamp coolers or desert coolers) for Industrial, Commercial and Residential needs while offering a completely natural way of delivering refreshing cool air. Evapoler cooling units are specially designed for hot climatic conditions with low humidity.

Project Cases Application

The Evapoler air cooler finds application in  commercial , residential , industrial and institutional buildings like Banks, colleges,hostels, offices, departmental stores , textile mills,Factories,telephone exchanges, data centers, multiplexes, Hospitals, kitchens,restaurants ,reception halls, marriage gardens ,supermarkets,Green houses , food processing industry etc.