Nothing can be better than air coolers when it comes to beating the harsh summer heat. Summers are complete with an air cooler by your side because more than a fan is needed to save you from the rising temperatures of Nagpur. An air cooler is a must-have for a stress-free and relaxing summer if you are from Nagpur. But your air cooler, like every other machine, requires proper maintenance. After using your favorite air cooler for a few months, it must und...