Solar Collectors can either be flat plates or evacuated tubes. Either of these two collectors collect direct solar radiation & transfer its heat energy to water. Thus water gets heated almost for free during day time; till direct sun rays / sunlight is available. We provision a wide range of solar water heaters from 125 LPD to 25,000 LPD with either of the two types of collectors. However since Solar fails to deliver during night time or cloudy/rainy weather or in absence of direct solar radiation; we insist going with integrated Heat Pump Backup instead of conventional electric Backup.