As the energy consumption got bigger and bigger during the last decades, it has a more stronger impact on the environment as I write this. Each home consumes energy every year, and there are 1.85 million new homes built per year. Also, energy is consumed in building the home, as in sustaining the home’s comfort temperature, cooking, lighting, and powering several appliances every day. It is estimated that every home consumes about 12,800 kWh per year, and every homeowner gets out of his pocket about 1600$ yearly, just for having his newly or elder home heated and lightened properly, his kids playing on the computer all day, etc.
As for natural gas consumption, is goes to 69.000 cubic feet per household annually!
Building a house that is properly insulated from the exterior, having all the ducts thermally sealed, could save about 20% of the yearly consumption, making that home more easy to heat and more hard to cool down during the winter season. Almost the same story applies for the all-summer areas of the world, where a house has to maintain a maximum room temperature.
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