Cost of an inverter air conditioner depends on its capacity and other features. 1 ton inverter air conditioner comes under Rs. 20,000 to Rs. 35,000. 2 ton inverter air conditioner comes under Rs. 35,000 To Rs. 60,000. And 1.5 inverter ton air conditioner ranges from Rs.30,000 To Rs. 45,000. Some models are expensive and some are less expensive in the same capacity range, because the cost also varies depending on the energy efficiency rating.