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Households use about 18% of the total energy consumed in the world. A good part of that energy can be saved. In places with cold winters, space heating is the principal energy drain at home. Space heating alone accounts for 42% of energy consumption in U.S. homes. For indoor spaces that depend on heating or air conditioning systems, key ways to reduce energy waste include: reducing air leaks, improving building insulation, and introducing more efficient heating or cooling schedules. However, exploring ways to reduce the dependency on artificial heating and air conditioning system is another key quest.
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