I am using this water heater from last 1 month and not much satisfied with its performance. Though its doing the job but its not justifying its price. The final temperature of the water that comes out the tap is not that hot, its just some degrees higher than normal tap water. It is not that powerful which can give you out boiling like hot water, its just good for not so cold places where you just need little warm water. Though we cant deny that it is an instant geyser and gives out hot/warm water instantly and you dont have to wait for 15-20 mins.