The Sudarshan Saur 300 LPD ETC Solar Water Heater is a large evacuated tube system with a glass-lined-coated tank, sized for a family of 6 to 9, carrying a 20-year tank guarantee the longest in its class. It uses 23 tubes to heat a 300 litre tank. It is a gravity-fed, non-pressurized system.
Capacity for a large family. At 300 litres, this serves a large or joint family of 6 to 9 people sharing hot water across a morning window. Twenty-three evacuated tubes feed the tank, sitting between the 250 LPD (5-7 people) and the 500 LPD (10-15) in Sudarshan's glass-lined range.
The 20-year guarantee is the headline, and the tank backs it. Most solar water heaters cover the tank for 5 to 10 years; a few reach 15. Twenty years is the longest guarantee available, and only a genuinely durable tank supports it. The inner tank is glass-lined-coated at 2.5 mm thicker than most glass-lined tanks in this class putting a robust barrier between your water and the metal. On a 300 litre system, where replacement means dismantling a 23-tube array off the roof, a tank that lasts two decades is the economic case for buying it.
Built for hard water. On borewell supply, where mineral-heavy water destroys an ordinary tank in three to four years, the glass-lined coating is what lets this unit carry a 20-year guarantee where a plain tank would fail early. For a large household choosing a solar water heater for hard water, guarantee length is the clearest signal of a tank that will survive your supply.
Evacuated tube heating. The 23 tubes each hold a vacuum layer that traps heat like a thermos, so an evacuated tube solar water heater keeps producing on cold winter mornings and overcast monsoon days, when a flat plate system slows. For a household of 6 to 9 bathing in the same window, that keeps hot water available for everyone.
Two things to confirm before ordering. Your overhead tank or Sintex must sit at least 6 feet above terrace level, because this system runs on gravity. And if you have a booster pump on your terrace, this product is not for you — you need a pressurized model. Send our team a photo of your terrace and we will confirm before you spend anything.
On sizing, 300 litres serves 6 to 9 people. If you are more, look at the 500 LPD; if fewer, the 250 LPD saves money.
The price includes transportation to your house, lifting to the terrace, and installation. You arrange the plumbing connection.
SolarClue is India's managed solar marketplace. Our team confirms whether 300 LPD suits your household, whether your water hardness suits this tank, and whether your terrace and tank height work for a gravity-fed system, before you pay anything. You book with a token payment rather than the full amount upfront. Delivery, terrace lifting and installation are coordinated by us through verified partners, and we handle Sudarshan Saur guarantee support afterwards. Compare the Sudarshan Saur 300 LPD against Supreme, V-Guard, Anu and Racold on our platform, and check the current solar water heater 300 ltr price. Talk to our team for the installation timeline in your city.
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