Tank capacity ranges from 30 – 60 ltrs. Hence, do not require filling multiple times a day (assuming a usage of 4-5 hrs / day)
Gives more cooling as large cooling pads are used
Cons
Could be pretty large in size
Desert
Tower
Pros
Similar to desert coolers in cooling efficiency & capacity
As they have greater height, they occupy less space
Cons
A bit expensive
Tower
Personal
Pros
Ideal for a single person
For areas like shops etc., where larger area cooling is not required
Cons
A bit expensive
Personal
Room
Pros
Cools small to medium size rooms
Mostly use blowers for cooling
Cons
Tank capacity ranges between 20 – 30 ltrs. Might require to be refilled multiple times during a day
Room
Window
Pros
Do not occupy the space inside the room
Ideal for small rooms
Cons
Limited cooling
Window
Capacity
Capacity is probably one of the most important factors to consider when buying an air cooler.
Please note, the below categorization has been given assuming a height of approx. 8 feet :