Voltas has been in the indian market for years but still it is known as a company that manufactures low cost and low quality goods.
I bought a Voltas Vertis window air conditioner a few years back for my mothers room, I will say that it was very foolish dicision.the a.c has been repaired almost five times in last few years and every year it is repaired atleast two times which is really pathetic.
The cooling is ok but it is very noicy and the plastic quality used in the a.c is really very bad, Overall I would say dont buy this a.c just put some extra bucks and buy a l.g or a samsung product instead.