in England,the term geyser was used to describe a gas fired hot water boiler,but I have also heard it applied to things like tea urns,so I would imagine them to be at leat 2.5KW.
Amarbir,A couple of years ago I spent some time at my mates mothers house in Pandoori near Jalundhar, things like fridges and freezers were plugged into a small box that said 'voltage stabiliser'on them and had a voltmeter on the front.Have you any idea what these things do ? or are they just an undervolt relay as we got loads of brownouts while I was there.