Depending on room size and no of person u would need tower cooler or desert cooler, for 1 person small room bachelor tower cooler 20 ltr is enough, good deals you can get currently at paytm infibeam and shopclues, for slightly bigger room and more than 1 person go for the old design desert coolers, bit bulky but much better i bought this one http://www.desidime.com/forums/hot-deals-online... though symphony 45 ltr siesta desert and some bajaj desert models are also available cheap at infibeam,
Depending on room size and no of person u would need tower cooler or desert cooler, for 1 person small room bachelor tower cooler 20 ltr is enough, good deals you can get currently at paytm infibeam and shopclues, for slightly bigger room and more than 1 person go for the old design desert coolers, bit bulky but much better i bought this one http://www.desidime.com/forums/hot-deals-online... though symphony 45 ltr siesta desert and some bajaj desert models are also available cheap at infibeam,