Evacuated Tube Collector based Solar Water Heater has PUF insulated stainless steel tank with SS cladding which ensure hot water even on winter mornings. The Solar Water Heater uses evacuated glass tube collectors that track the sun throughout the day and intercept more than 93% of incident solar radiation. The Solar Water Heater can handle hard water with ease without drop in efficiency and does not require frequent internal cleaning. The Evacuated Tube Collector based Solar Water Heater possesses high thermal efficiency and requires less space.