Crompton Optimus Vs Symphony Sumo: Which Cooler is Best?

The Crompton Optimus 100-Litre Portable Desert Air Cooler outperforms the Symphony Sumo 75 XL in capacity, air delivery, and features.

The Symphony Sumo holds 75 litres of water, while the Crompton Optimus holds 100 litres and needs less refilling. The Crompton Optimus delivers 5500 m3/hr. The Symphony Sumo cools the Crompton Optimus better and covers more area with 4200 m3/hr.

The Crompton Optimus has an auto drain function, humidity control knob, and dual water inlets, while the Symphony Sumo does not. The Crompton Optimus has better build quality, 5-wheel support, and mosquito net panels. The Symphony Sumo has a loose fan speed knob and a weak pump.

Comparison Table: Crompton Optimus Vs Symphony Sumo

Bottom Line
Pros
Cons
Capacity
Air Delivery
Power
Dimensions
Suitable Area
Controls Type
Noise Level
Wheels
Air Flow Direction
Mesh/Net Over Filters
Crompton Optimus 100-Litre Inverter Compatible and Portable Desert Air Cooler
Crompton Optimus 100-Litre Air Cooler
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Bottom Line
Powerful air delivery for large rooms
Pros
Large capacity (100 L) suitable for larger areas.
Powerful air delivery and long air throw.
Large ice chamber for better cooling.
Auto drain function and humidity control.
Swing function with pump on/off option.
Two water inlet options and insect protection.
Sturdy construction and lower noise level.
Cons
Unequal water distribution on cooling panels.
Airflow only in one direction, air deflector can be irritating.
Capacity
100 L
Air Delivery
5500 m3/hr
Power
230 Watt
Dimensions
104 x 39 x 41 cm
Suitable Area
Up to 650 sq. ft.
Controls Type
Button
Noise Level
30 dB
Wheels
5 wheels
Air Flow Direction
One direction, air deflector can be irritating
Mesh/Net Over Filters
Yes
Symphony Sumo 75 XL
Air Cooler
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Bottom Line
Wide swing and air throw provide good cooling in moderately sized areas.
Pros
Decent capacity (75 L) suitable for medium-sized areas.
Wide swing and powerful air throw.
Good cooling performance during breezy and cooler nights.
Sturdy wheel support system.
Plastic 5-blade fans.
Cons
No autofill system.
Design flaw with wheel support, prone to breaking.
Lower quality honeycomb filters and pump.
No mesh or net over the filters.
Loose fan speed knob and limited speed setting difference.
Capacity
75 L
Air Delivery
4200 m3/hr
Power
190 Watt
Dimensions
48 x 70.7 x 107.3 cm
Suitable Area
Up to 400 sq. ft.
Controls Type
Button
Noise Level
< 45 dB
Wheels
4 wheels (design flaw)
Air Flow Direction
Wide swing and great air throw
Mesh/Net Over Filters
No

Crompton Optimus 100-Litre Portable Desert Air Cooler

The cooler’s capacity stands out. The 100-litre water tank lets the cooler run long without refilling. With an air delivery rate of 5500 m3/hr and 230 watts, the cooler efficiently cooled my living space. It was quiet in my room at 30 dB.

Five sturdy wheels make moving the Crompton Optimus cooler easy. It cools 650 sq. ft., perfect for my living room. The air throw was great, reaching 15-20 ft, and the ice chamber was the largest I’ve seen, improving cooling performance.

Auto drain removes 90% of water. I liked the back humidity control knob, which helped me keep the room at the right humidity. Swinging the pump on or off allows air circulation flexibility.

The cooler has two water inlets for tap connection and manual refilling. The cooler’s mosquito-netted panels and collapsible front louvres keep insects out.

The air deflector can be irritating, and airflow is one-way. On flat surfaces, the cooler distributes water poorly. One panel remains dry, which may affect cooling performance.

Symphony Sumo 75 XL

I liked its 75-litre capacity for cooling 400 sq. ft. It delivers 4200 m3/hr and uses 190 watts.

The cooler’s 48 x 70.7 x 107.3 cm dimensions make it manageable in the room. I liked the quietness, which was below 45 dB.

Even on low fan speed, the Symphony Sumo 75 XL performed well in cool breezes. It does not have an auto-fill system, so manual refilling is necessary.

The wide swing and air throw help cool the room. Like the Crompton Optimus, a mesh or net over the honeycomb filters would improve the cooler’s five-bladed plastic fans.

The wheel support system was sturdy, but some design flaws caused broken wheels. The honeycomb filters and pump could have been better.

The fan speed knob was loose, and the speeds weren’t much different. In temperatures above 40°C, instant cooling may disappoint. Sitting by the cooler reduces heat and sweating.

Debolina
Debolina

Debolina Roy is our senior home improvement writer, specialising in reviewing the latest home and kitchen appliances. Debolina has written about hundreds of products like Washing Machine, refrigerator, Air conditioner, Vacuum Cleaner, Air Purifier and is committed to finding the most reliable and best value for money buys. Debolina is also interested in Tech and has completed B.Tech in Electronic and Telecommunication from Dibrugarh University. Debolina helps to uncover the washing and clean hacks too, with a focus on easy, natural solutions. Debolina also holds an MA in Journalism and has previously worked as a freelance smartphone and gaming console’s journalist, working for TechRadar, and more.

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