Weigh all the pros and cons carefully before you invest in any particular brand. For example, not all tower coolers work on inverter power, an indispensable feature if the cooler is meant for office use. Also, selecting one which has a water level indicator may be a wise choice. When buying an air cooler, make sure that the manufacturer's warranty is included with the purchase so that future servicing and repairs are hassle-free. Some coolers also come with an ice chamber for additional cooling. Online marketplaces like Amazon, Flipkart, eBay, Snapdeal are the usually preferred shopping destinations to buy online tower air coolers. Some of these sites also offer easy payment methods including the EMI option. Carefully, go through the tower air coolers listed above, and order the best tower air cooler model to enhance the 'air quality' in your life.