Here are the Top 3 Customer Rated Air Cooler Products From Flipkart,
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1.) Crompton Ozon 75 Desert Air Cooler
Rating: 4.2 (114 Customers)
Price: 9699 INR Only 
2.) Hindware CS-176001HPP Desert Air Cooler
Rating : 4.3 (67 Customer)
Price : 10399 INR Only
3.) Symphony Touch 20 Room Air Cooler
Rating: 4 (185 Customers)
Price : 6302 INR Only