The Varistor 300 LPD FPC GLC Solar Water Heater is a flat plate collector system with a glass-coated galvanised iron tank at 3.5mm, sized for a family of 6 to 9. It runs three collectors, is rated to 8 bar, handles water hardness up to 600 ppm, and carries a 5-year warranty on both tank and panels.
The thickest tank in the Varistor FPC range. At 3.5mm the inner tank is heavier than the 3.0mm used on the smaller units and well above the 1.6 to 2mm typical of the market. Tank thickness and coating together determine how long a heater survives your water, and on a 300 litre three-panel system where replacement means dismantling the array off a roof that substance is what protects you from the job. This is the advantage of a house brand: the specification is set by what lasts rather than by what a distributor's margin permits.
Rated to 8 bar, for homes with a booster pump. At 8 bar it holds up against the pressure a booster pump delivers and supplies hot water at the same pressure as the rest of your plumbing, so showers stay strong across a large home with several bathrooms drawing at once.
Flat plate technology, sized for a large family. Three flat plate collectors absorb sunlight across their full surface and heat water directly into the 300 litre tank, serving 6 to 9 people. Flat plate is the proven, low-maintenance technology, reliable in strong direct sun, warming more slowly than an evacuated tube system on cold mornings and heavy overcast.
On hard water. The 600 ppm rating suits soft to moderately hard supply. If your borewell water runs harder as much of Bangalore and Hyderabad does this tank will scale and corrode before its time. Our Varistor ETC 300 handles 2000 ppm at a 10-year warranty; if your water is hard, tell our team and we will route you to the tank that will survive it rather than the one that fits your pump.
Before you order: your terrace needs at least 9 feet by 10 feet of clear, unshaded space three flat plate collectors take a large footprint. An electrical backup coil is available separately for cloudy stretches.
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, and Varistor is our own brand we set the specification, we stock it, and we stand behind it directly. Our team confirms whether 300 LPD suits your family, whether your water hardness suits this tank, and whether your pressure setup matches this model, 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. Compare the Varistor against Supreme, V-Guard, Sudarshan Saur and Racold on our platform we will tell you honestly which suits your water and budget. Check the current solar water heater 300 ltr price and talk to our team for the installation timeline in your city.
