Voltas — Aluminium coil gas leakage in Voltas A/C

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Chennai, Tamil Nadu

I bought Voltas A/C for around 30K (1T 5Star) 3 years back. I hardly used it for 4 months and when the winter started i stopped using A/C. From the time 1 year warranty period got over there is gas leakage issue. Even if i fill gas it will last for 10 to 15 days only. When i approached service center they are telling the issue is because of aluminium coil inside the outdoor unit and the cost for replacing it to copper coil is bloody 8K. Why TATA voltas is selling selling such cheap products that is lasting only during the warranty period and cheating the customers.