The first factor you have to consider when choosing an air cooler below 9000 is to decide on the capacity. Higher the capacity, more powerful is the cooling. The next factor you have to decide on is the type of the air cooler. The common types of air coolers available in this range include Personal, Tower, Window, Desert, and Room. If you're looking to cool only a particular area of the room, then you may opt for a personal or tower cooler. If you're looking for corner-to-corner cooling for the entire room, then you can go with a Desert or Room cooler. The other factor you have to consider is the power consumption. Higher the consumption, better is the cooling and also higher is the energy bill. Make use of the filters available on this page to find the right model and then complete your purchase at the lowest price at your preferred online retailer like Amazon, Flipkart, Tata CliQ, Shopclues, Snapdeal and so on.