The Anu Solar 300 LPD ETC GLC Solar Water Heater is an evacuated tube system sized for 6 to 9 people, using 30 vacuum tubes to heat a 300 litre tank. The inner tank is galvanised iron with Anu's Crystal Blue glass-lined coating, rated to handle water hardness up to 2000 ppm, and carries a 10-year tank warranty. It is a gravity-fed, non-pressurized system.
The number that matters on this page is 2000 ppm. That is the water hardness this tank is rated for, and it is the difference between a fifteen-year appliance and an expensive lesson. The inner tank is galvanised iron finished with Anu's Crystal Blue glass line coating at 1.6 mm — a physical barrier between your water and the metal. A glass lined solar water heater is what you need on borewell supply, where mineral-heavy water quietly eats through an ordinary tank in three to four years. That coating is why this unit carries a 10-year tank warranty rather than the 5 years Anu's FPC range offers at the same capacity. If you are choosing a solar water heater for hard water, this is the specification that decides it.
A 300 LPD solar water heater at this size serves a large family or a household running several bathrooms in the same morning window. Thirty evacuated tubes feed the tank, and each tube holds a vacuum layer that traps heat the way a thermos does. That is what makes an evacuated tube solar water heater keep producing on cold winter mornings and through overcast monsoon days, when a flat plate system slows down. If your household bathes early, an ETC solar water heater is the technology that has water ready.
The tube design also suits a smaller footprint. This unit needs 8 feet by 9 feet of clear terrace space, less than the three-panel FPC system at the same 300 litre capacity. The outer tank is galvanised and powder coated to survive years of sun and rain.
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 instead. 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 ten or more, look at the 500 LPD. If you are four or five, the 200 LPD saves you money without costing comfort.
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 Anu Solar warranty support afterwards. Check the current Anu Solar water heater price and solar water heater 300 ltr price on our platform, and talk to our team for the installation timeline in your city.
