Is it necessary to have a south facing shadow free area for installation of a solar water heater?
In India, solar water heaters perform best in winter when installed facing south with the angle of inclination equal to the latitude of the location.However, deviations of 30 degrees on either side of solar south and plus or minus 15 degrees in angle from the latitude will only cause a small loss in performance. A 100lpd solar water heater requires around 2sqm. shadow-free area. The floor area required by each solar water heater is mentioned under Product Specifications for each model.