Did you know that electric element-type hot water systems can be responsible for around 2 tonnes of greenhouse gases a year?! To become more energy-efficient:
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Install a solar hot water system
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Install AAA-rated shower heads to lower the amount of water you use, and the hot water that needs heating.
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Lower the thermostat on your hot water system to around 50 degrees to optimize efficiency.
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Spend less time in the shower.
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Use cold water to wash your clothes.
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Insulate the hot water pipes throughout your home.