Recommended for small rooms. Review on Indoma Personal Air Cooler

I purchased indoma cooler for my personal and for my private room because this cooler is specially for personal use.i purcahsed this cooler last summer when temperature was crossing it's limit then we decide to buy a cooler and went to my local super market and purchased this coller from ravi electronics at rs.5000 which is I think is a reasonable price for this cooler.after purchasing this cooler I felt some releif form summer but remember this coller will not works great in big rooms.my room is small that's why it works greatly but there is one demerit of this cooler that it takes about an hour to see some change in temperature and this is what frustates me.this cooler is cheap and only can used for personal use and for small rooms.so if your planning to buy this cooler for big rooms and for your whole family then your are making a big mistake