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DIY: How to Make Cheap Air Conditioning Earth Tubes: Do It Yourself Homemade Air Conditioner - Non-Electric Sustainable Design - Geothermal Energy - Passive Heating and Cooling

Earth tubes (earthtubes, or earth-air tubes) are underground tubes that use geothermal energy to cool or heat temper the air for your home. It works like cheap air conditioning because you can build it yourself for several hundred dollars and it is FREE to run (no electricity needed). Being completely passive, this is a sustainable technology based on designs that are 3,000 years old and still used today around the world to cool homes.Read more

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