Best Mini tank electric tankless heaters

So everyone wants hassle free hot water. Right?
NOw question is how to get hot water on demand and without any disturbance.

Technology has always amazed us with its potential. Now market is filled with mini tank electric water heaters for us to chhose from. whats the benefit? they are eco friendly? How?
Because of point of use in nature they will supply immediate hot water whenever required so there will be no wasting of water during this entire process.. w will get only hot water and no more cold water mixxing with hot water.
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