I live in New Orleans, Louisiana. The weather here is very similar to southern India. I use 1 window unit to cool my bed area. It is a 5000btu AC unit and it cools the area 10'x15' very well using 4.5 amp/hr (500 watts/hr) . I use sheets to make a tent for cool air around the bed. I lived without AC for many years, i found a bottle of water to drink (sweat) and a fan worked best.