Corrosion Free Hot Water Generator is suitable to heat water up to 250 ° C with combustion of any solid fuels like wood, coal, bagasse, corn cobs, agro waste, lignite, pet coke, etc. The Generator is designed with all safeties and controls well defined for safe operation without lesser maintenance. The Generator has heat transfer efficiency, long thermic fluid life and is corrosion free in nature. The Generator has the feature of no scale problem, no boiler regulation and abrasion resistance. The Generator has capacity ranging from 600,000 to 10,000,000 kcal/ hr. The Corrosion Free Hot Water Generator has working temperature up to 200 ° C.