Crompton Optimus 100 Litres Desert Air Cooler Review

Quick Verdict

The Crompton Optimus 100L is a strong choice for buyers who need:

• Large 100-litre water tank

• Powerful air throw for bigger spaces

• Honeycomb cooling pads

• Auto-fill water support

• Long runtime without frequent refilling

It may not be ideal for very small bedrooms because of its large size.

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Key Features of Crompton Optimus 100L Air Cooler

1. Massive 100L Water Tank

One of the biggest reasons buyers choose this model is the 100-litre tank capacity. It allows long cooling hours and reduces the need to refill repeatedly.

Best for:

• Long summer nights

• Daytime office use

• Shops or commercial spaces

2. Strong Air Delivery

This cooler offers around 5500 CMH air delivery, which means it can push a high volume of cool air across a wide area.

Suitable for rooms up to approx. 650 sq ft depending on ventilation and weather conditions.

3. Honeycomb Cooling Pads

Honeycomb pads are more efficient than basic grass pads. They usually:

• Hold water better

• Provide better cooling

• Last longer

• Need less maintenance

4. Auto Fill + Drain Function

The auto-fill system helps maintain water level continuously if connected properly. Drain support makes cleaning easier.

This is useful for users who want less daily maintenance.

Design & Build Quality

The Crompton Optimus has a tall desert cooler design with wheels for movement. Because of the large tank, it is bulkier than compact room coolers.

Best placement:

• Living room

• Hall

• Balcony side room

• Shop front

• Large bedroom

Cooling Performance Review

In dry summer weather, this cooler performs well with cross ventilation. Add cold water or ice for better results.

Best Performance Tips

• Keep near window or fresh air source

• Open another window for airflow exit

• Clean pads regularly

• Keep tank filled

Power Consumption

The model uses around 200W power, making it much cheaper to run than most air conditioners.

If you want lower electricity bills during summer, this can be a smart option.

Pros and Cons

Pros

• Very large 100L tank

• Good for large rooms

• Powerful airflow

• Honeycomb pads

• Auto-fill support

• Better than small coolers for halls

Cons

• Takes more space

• Heavy when full

• Not ideal for tiny rooms

• Cooling depends on ventilation

Who Should Buy This Cooler?

Buy this if you need:

• Cooler for hall or drawing room

• Shop cooler

• Large bedroom cooler

• Low electricity cooling solution

• Long backup tank capacity

Avoid if you need:

• Small room silent cooler

• Compact personal cooler

• Easy lift portable mini cooler

Is Crompton Optimus 100L Worth Buying in 2026?

Yes, if your priority is large tank + strong airflow + lower electricity cost, the Crompton Optimus 100L still remains a practical option in 2026.

For Indian summers, especially dry and hot areas, it offers useful value.