How to use air cooler

our web : https://vankool.com
Facebook : https://www.facebook.com/vankool2017/
Recommended reading ：
https://vankool.com/blogs/window-swamp-cooler-vs-window-air-conditioner/
https://vankool.com/blogs/how-to-choose-best-industrial-air-cooler/
https://vankool.com/blogs/how-to-choose-the-best-air-cooler/
https://vankool.com/blogs/things-to-know-before-buying-portable-evaporative-cooler/