What are the parts of an air cooler?

Air cooler is device used to cool the air inside a room or a building. They are also used for dissipating heat from furnaces, machineries etc.  If you are using an air cooler in your home, it is better you have some basic idea about its various components so that you can carry out simple DIY activities and avoid the dependency upon technicians like the refrigerators repair services.

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They may be surface, trickle or a combination of both. In surface air coolers, it reduces the air temperature by heat transfer through finned or tubular surfaces that are washed by coolants like ammonia or secondary refrigerants.  In rotary air coolers heat is dissipated periodically to cooled sheets, grids, porcelain rings etc.   In trickle coolers   water or brine is sprayed from atomisers to cool the air.

Air coolers used in homes are appliances used to cool the air inside a room with the help of water. Humidity in rooms is reduced by air conditioners. But as other areas are dry air conditioners often result in making the situation worse. But as air coolers do not reduce the humidity, it allows the home owner to reduce the temperature without affecting the humidity. In this appliance hot air touches the water and its heat gets transferred to the cold water. Some water evaporates allowing cool air to blow into the room.  Now let us consider the important components of an air cooler and try to understand the functions of each of these components in the operation an air cooler.

On-site water source

Water is the coolant for air coolers. So availability of water on its site is unavoidable. In some homes there may not have on-site water sources.  In such cases it will be required to bring water to the site through some means like pipes or in vehicles. In some places bringing of water can become very expensive


The home air coolers have vents with fans that blow cooled air into the intended area. In moderate climates when the temperature is not very hot, one needs to use the vent only.  In such situations the   air cooler becomes a simple fan that blows air to the occupants to cool them. When working only in vent mode, much energy is not needed and it can help the owner in saving some money towards the energy charges.

Cooler pads

Air coolers are provided with pads which can absorb water and permit maximum air to flow through them.  These pads are the main medium that allows the air to get cooled and thereby cool the entire home or intended area.   These pads are made of pliable aspen wood as well as special cellulose papers. There are synthetic versions of cooler pads which are found to last longer than the natural ones mentioned above. They also resist foul smellers and mildew as water which is the breeding place of these insects is absent in them.


Water distributors are provided in every air cooler that takes in water from the on-site source for distributing over the pads so that they often remain saturated. If not, the water will soon evaporate.  Pumps and motors are used to power the water flow through the distribution channels. If there is no water to be pumped, the pumps should shut off automatically.

Otherwise they will get overheated and damaged.  The motor used for the pump is either centrifugal or axial. Some of these motors have sealed lubricants where as others need yearly lubrication.  For people who prefer quiet motors it is better if they buy belt drive motors notwithstanding the fact that direct drive motors are more efficient and do not break down  periodically.

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A regular air cooler often consumes around 100 watts only. Compared to the average power consumption of 75 watts for a ceiling fan, this not more and is affordable to any person.  Considering the fact that an average air conditioner of one tonne capacity consumes a whooping 3500 watts of power, one will understand that the reason for the ever increasing popularity of
air coolers these days compared to air conditioners. So, any person who tries to understand the basic principles and parts of an air cooler can easily make use of it to its fullest efficiency without spending much money toward its repairs and maintenances carried out by walk in cooler repair Vienna services.

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