AO Smith HSE-SDS-15 15-Litre 2000-Watt Vertical Waterr heaters are friendly on the wallet with advanced technology. It is a Blue diamond glass lined tank Water comes out hot very quickly for the showers, baths, and for doing the dishes with a temperature Range of: 25-75 degree centigrade and it gives maximum protection against hard water and corrosion with Rated water pressure: 8 Bar. This one is very energy efficient and can use the hot water most of the day and it never runs cold. it didn’t take a lot of time to heat, one of the most energy efficient water heater you can buy, A O Smith watter heater is delevering with Warranty: 7 years on inner tank, 4 years extended warranty on glass coated heating element and 2 years comprehensive. This water heater’s function is best in the summer, when we can get 4-5 people to take showers back to back without running out of water. The water heater has a more limited function in the wintertime, but none of that is related to the actual quality additionally, we can save a fair amount of money on our power bills due to the more efficient function of this model. I would recommend this water heater to anyone who is looking for a cheaper water heater with superior quality