I’m using bajaj air cooler. It is somewhat inefficient in satisfying our needs. It doesn’t give the required air. And when it comes to it’s protection then it’s blades are not properly surrounded by strong fibres and can be distroyed by rats, it’s also too bulky to and needs lots of water and it’s open surface area for giving air is too small that’s why it doesn’t gives the proper required quantity of air. And overall it’s a product which need to be modified.