Description
Air Throw of 55 Feet. That's Across a Hall.
18" Fan · 5500 m³/hr · 65 L · Everlast Pump.
A genuinely large-format cooler, sized for the spaces most coolers can't reach · an 18-inch fan pushing 5500 m³/hr of air up to 55 feet, covering rooms of 650 sq ft — halls, large living rooms and commercial floors · a 65-litre tank with auto fill, so the water level maintains itself instead of you refilling twice a day · an Everlast Pump built to resist clogging and corrosion in hard water · a large easy-clean ice chamber · humidity control with three speeds · 4-way air deflection with auto swing louvers · honeycomb pads, auto-drain and a mosquito net · 230W
🌬️throw, not just delivery
Two numbers decide whether a cooler works in a big room, and most listings only give you one. Air delivery — 5500 m³/hr here — is how much air the fan moves. Air throw is how far it actually pushes it, and that's what determines whether someone sitting at the far end of a hall feels anything at all. Plenty of coolers move respectable volumes of air and then drop it two metres in front of themselves. The Optimus 65's 18-inch fan throws air up to 55 feet, which genuinely crosses a large living room or a hall full of people. Ask about throw distance on any cooler you compare — it's the number that separates the ones that work in large spaces from the ones that don't.
Everlast Pump — the part that actually fails in Delhi water
Ask any cooler owner what went wrong and the answer is almost always the same: the pump stopped, the pads stayed dry, and the machine became an expensive fan. Hard water is why — scale and mineral deposits clog the pump and corrode it, usually part-way through the second season. The Everlast Pump is engineered specifically to prevent jamming in hard-water conditions and resist corrosion, which is the single most useful thing a cooler can be built for in Delhi NCR. Alongside it, a motor overload protector prevents overheating under continuous running and extends motor life — the second-commonest failure covered too.
65 litres with auto fill — stop carrying buckets
A large cooler running through a Delhi afternoon gets through water quickly, and on an ordinary machine that means noticing it has run dry, fetching a bucket, and waiting for the pads to wet again before it cools properly. The 65-litre tank is large to begin with, and auto fill maintains a steady water level from a connected supply — so it runs continuously without anyone monitoring it. On a cooler this size, in a hall or a shop that's occupied all day, that's the difference between an appliance somebody has to manage and one that simply works.
⚙️ Built for a full season
Large Ice Chamber
Add ice for an instant chill, removable lid for cleaning
Honeycomb Pads
High density, hold more water for faster cooling
4-Way Deflection
Motorised auto swing louvers spread air evenly
Overload Protector
Guards the motor against overheating
🧼 Hygiene and convenience
Mosquito Net
Keeps insects out of the standing water
Auto Drain
Drains the tank without tipping the cooler
Collapsible Louvers
Fold fully away for cleaning access
Humidity Control
Adjust cooling intensity to the weather
📦 In the box
Humidity control is worth understanding — it lets you dial the cooling intensity down when the air is already damp, which is what stops a cooler making a room feel muggy rather than cool as the monsoon approaches.
A fraction of what an AC draws for a 650 sq ft space — which is the whole point of a cooler, and why it can run all day through a long Delhi summer.
Full power for the afternoon peak, gentler settings for evenings and overnight, all on a simple speed control.
Available in White & Black or White & Purple — ask us which variant is in stock when you order.
An established Indian name with authorised service support nationwide and a 1-year comprehensive warranty.
| Brand / Model | Crompton Optimus 65 ✅ |
| Type | Desert air cooler ✅ |
| Cooling Area | Up to 650 sq ft ✅ |
| Tank Capacity | 65 Litres with auto fill ✅ |
| Air Delivery | 5500 m³/hr (6470 CFM) ✅ |
| Air Throw | Up to 55 feet ✅ |
| Fan Size | 18 inch ✅ |
| Pump | Everlast — anti-clogging, hard-water resistant ✅ |
| Cooling Pads | High-density honeycomb ✅ |
| Ice Chamber | Large, with removable lid for cleaning ✅ |
| Air Distribution | 4-way deflection · motorised auto swing louvers ✅ |
| Speed Settings | 3 · with humidity control ✅ |
| Hygiene Features | Auto drain · fully collapsible louvers · mosquito net ✅ |
| Protection | Motor overload protector ✅ |
| Power Consumption | 230 W (standby 65 W) ✅ |
| Voltage | 220 V AC ✅ |
| Dimensions (W × D × H) | 44 × 43 × 66 cm ✅ |
| Weight | 19.9 kg ✅ |
| Body Material | High-grade plastic ✅ |
| Colour Variants | White & Black · White & Purple ✅ |
| Country of Origin | Made in India 🇮🇳 ✅ |
| Warranty | 1 Year Comprehensive ✅ |
Why buy from Mahajan Electronics?
- Free 24-hour delivery across Delhi NCR
- Authorised Crompton retail partner — 100% genuine
- GST invoice — save up to 18% on business purchases
- 45+ years of expertise in consumer durables
- Advice on the right cooler size for your room
- Raja Garden · Jail Road · Dabri Mor
Order today. Delivered in 24 hours.
Crompton Optimus 65 · Desert Air Cooler · 65 L Tank with Auto Fill · 18" Fan · 5500 m³/hr · 55 ft Air Throw · Everlast Pump · Large Ice Chamber · 650 Sq Ft
Cooling performance depends on humidity, ventilation and room conditions. Colour variant subject to availability. Image for reference only.
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With a powerful air delivery of 5500 m3/hr, the Optimus 65 air coolers is suitable for up to 650 Sq. Ft. room size which helps to keep the room cool & refreshing for a long time. |
The air cooler comes with 65L tank capacity which allows you to experience cool air for a long time while the auto fill allows continuous water supply. |
Large ice chamber lets you add good amount of ice that keeps the room chilled for a long time while its easy maintenance keeps the air fresh & hygienic. |
The auto drain function helps to drain out the water offering you convenience & hygiene with cool air. |
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Everlast pump helps in preventing jamming issues in the cooler even with hard water thus ensuring durability of the pump. |
The air cooler is engineered with a motor overload protector that ensures durability & longer motor life while preventing it from overheating. |
Adjust the cooling level according to your convenience and stay in comfort while keeping the humidity in control. |
Fully Collapsible Louvers & Mosquito net ensures health & hygiene which helps prevent the mosquitoes from getting into the water thus keeping it clean. |
Please Note: The image shown is for reference purposes only. Actual product details, including the serial number and manufacturing date, may vary.
