Consumer electronics major Panasonic India is aiming to double its residential airconditioning business in the next three years as it is betting big on new cutting age technologies along with growing demand, a top company official said. The company, which on Thursday introduced HU series of ACs with the recently-announced nanoeX technology, is eyeing about 35 per cent sales growth in the segment this year on the back of pent-up demand. According to the company, nanoeX technology releases hydroxyl radicals contained in water, which are also known as nature s detergent that are capable of inhibiting bacteria and viruses, including 99.99 per cent of adhered novel coronavirus.