PROPERTY NEWS - Your geyser is like a big kettle. It has an element inside that heats the water up to a set temperature.
When a hot tap is turned on, hot water is released from the geyser and cold water rushes in to replace it. As the water temperature in the geyser has now decreased, the element kicks in to heat the water back up to the set temperature.
However, heat will "leak" out of the geyser into the surrounding area and the rate of the heat leak depends on the quality of your geyser's insulation. These heat leaks cause the water temperature inside the geyser gradually to decrease and the element kicks in to reheat the water when necessary.
So, the argument for turning your geyser off when you are not at home is that the element will not periodically kick in to heat up the water and, therefore, you'll use less electricity. But this doesn't take into account that once switched off, the water in the geyser eventually cools down completely and, when switched on again, a huge amount of energy is required to heat the water back up to the set temperature. In most cases, more energy than if the element was periodically kicking in throughout the day.
• The type and condition of your geyser;
• How much hot water you use; and
• How often you use it.
Ways to help your geyser conserve:
• Only use the hot tap when necessary - washing hands, splashing your face etc. can be done with cold water only;
• Use less hot water when you do use it - short showers or shallow baths rather than long showers and deep baths;
• Turn your geyser off when going away for a few days - then it makes it worth it;
• Ensure your geyser and water pipes are properly insulated - ensuring that heat leak is lessened.
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