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Solar heater is a heater or heating system that heats up water for various purposes using solar energy. It is a natural form of heating. The solar panels are mostly set on the roof of the houses where it can get direct sunlight. The water gets heated up due to the heat provided by sunlight and then it is stored in insulated container for using it at a later time or whenever required. In places where electricity is not available, people use solar heaters to heat up the water for bathing, washing and other daily needs.