I bought voltas 1.5 ton split ac in November 2015 . Had water leakage in 6 months which was repaired during service, but before it’s even 2 years old it stopped cooling. And also it’s customers service is worst . After that I have bought videocon Ac which worked for 6 yers very fine without any gas leakage problems.
So beware My suggestion is go with Hitachi, Videocon, or even Panasonic. Voltas is overated for sure.