How can I make my geyser energy efficient?

The best way to get more from your geyser is to move it as close to the usage points in you house as possible, like moving it to the outside wall of your bathroom. What can also be done, is to let it be in a vertical position, this will let you use less electricity to heat it up and will not let as much mixing of cold water inside the geyser. You can also install a timer which let the heating element only work in times that are more convenient such as 4am to 6am, just before everyone wakes up to get ready for school or work, then again at 4pm to 6pm, when they get ready for bed.