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3 Types of Evaporative Air Coolers

Last updated Sep. 14, 2018


Across different regions of the world where they work well, air coolers are used by different households and businesses for air cooling. The machines are very efficient and are known for several other benefits.

The most important of these benefits is probably the fact that they consume far less energy and are, therefore, more economical to use.

Aside from that, air coolers are environmentally friendly and are recommended for those that really want to save the world even as they obtain the level of cooling that will keep them comfortable and healthy through the summer months.

Though they are all similar and work the same way, there are different types of air coolers. While some are portable others are much heavier and will need to be mounted.

Also, while some blow air directly into the space they are meant to cool, there are some that use duct systems to send cool air to different parts of a building.

Your cooling need will determine the sort of air cooler you will have to invest in but the three major types of air coolers you will see in the market include:

  • Direct Evaporative Air Coolers
  • Indirect Evaporative Air Coolers
  • Mounted Air Coolers

The major factors that should influence your choice of air coolers are your geographic location, the nature of the space you want to cool, and the size of the space.

We will discuss these different types of air coolers to so that you will have more information to help you make an informed decision about which type to buy.


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Direct Evaporative Air Coolers

The direct air coolers are also referred to as swamp coolers. They are known for their many cost-effective properties. For a start, they are quite inexpensive in terms of purchase price.

In addition to that, they do not require any form of installation. You just need to unbox your machine, fill the water tank and plug to a power outlet. Maintenance is also not an issue as they require just a few maintenances in order to operate optimally.

They are also very energy-efficient, requiring just a fraction of the amount of electricity needed by air conditioners to produce the same amount of cooling.

Direct air coolers do not use any form of a duct; they transfer the cool air they produce directly to an area you need them to cool.

They are also very portable machine that you can take anywhere you want to keep you cool at all times. As far as there is a power source, there is no problem at all.

You can use swamp coolers at home, in offices, and even in commercial spaces. They come in different sizes that are able to keep most places sufficiently cooled.

You need to be certain of the cooling requirement of any given space and purchase a swamp cooler that has the capacity to cool it.

Air cooler power is rated in Cubic Feet per Minute (CFM) so you can know exactly what you are going to get from a given unit. They improve the humidity of the space while cooling.


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Indirect Evaporative Air Cooler

This is the most suitable type of air cooler for industrial spaces. They are mostly large machines that have to be mounted and provide much higher cooling than swamp coolers can offer.

This means that the temperature you can get from using indirect evaporative air coolers can be much lower than what you can obtain with swamp coolers.

You will find them most useful if you do not want to use air conditioners in commercial facilities where heat is steadily generated by different machines and many workers.

They are equally not as portable as swamp coolers. The major difference between indirect evaporative air coolers and the direct coolers is the fact that they need some duct systems in order to transfer the cool air they generate to the space that needs to be cooled.

This also means that a single unit can provide cooling for different parts of the building as far as there is an efficient duct system in place to transfer the cool air to the different places.

Due to their size and the amount of cooling they are required to produce, indirect air coolers need a secondary air source to drive the evaporative cooling process.

The air may also be heated a little before they enter the evaporative media pads to cause evaporative cooling.

Indirect air coolers are very efficient in providing cooling for large spaces. Restaurants and other businesses will find them very useful but they are not the best type for small households.

They are also not as inexpensive as swamp coolers. Their price and the cost of installing the duct system means that they can be expensive but that doesn’t make them as costly as the type of air conditioner that can be used to cool same space.


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Mounted Air Coolers

This is more of a cross between direct and indirect evaporative air coolers. While there are direct air coolers that need to be mounted and some that are portable, all indirect air coolers need to be mounted.

When it comes to mounting, there are three basic ways to mount an evaporative air cooler. You can have them mounted on the ground, on a windowsill, or on the roof.


1. Ground-mounting:

This is not a very popular method since it has some obvious disadvantages. Normally, cold air falls while hot air rises, so it doesn’t make much sense when the machine is mounted on the ground.


2. Window-mounting

This is a popular style of mounting that can work with smaller evaporative air coolers. Window-mounting makes it easy for air coolers to obtain fresh hot air at all times to drive the cooling process.


3. Roof-mounting

This is for heavier air coolers. You will find this types of air coolers in commercial/industrial places where there is an efficient duct system to distribute the cool air generated to the different parts of the building the machine is meant to cool.

This type of machine is relatively expensive but still more cost-effective than central air conditioner systems.

Whatever your cooling requirement is, you will find the right air cooler for it. The three types of air coolers discussed above come in different sizes that are truly versatile.

As far as your climate is ideal for air coolers, you will definitely find the type and size that will give you just what you need without costing you so much.

If you have any further questions, contact us and we would be happy to help you.