Voltas is a Tata Product and it is among’s the very good brand as, Voltas has its own manufacturing unit, rest other AC companies get the parts assembles.
I am using this AC from last 9 years and still it is in good condition.
All internal parts are made up of copper, which is still higher than other manufacturer.
Cooling is V good, it just need regular service.
As per my point of view the life of this product(Voltas Split AC 1.5 ton 3 Star) is around 12 Years.
Electricity consumption remain same as other brand AC’s.
Regards
Shashi