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Get ALL My Books FREE!

It is true. I offer all my books free. Some of them are also for sale. So how do you know which is which or what needs to be done to get them free?

Why do I have both paid and free available?

I have for-purchase books because that is how I make my living. […]

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Earth Tubes Q&A

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 […]

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How to Make Earth Tubes for Passive Cooling

Cheap Air Conditioning is what Earthtubes (earth-air tubes / earth tubes) are all about! You can build your own earth tubes for passive cooling/natural cooling for about $150 per tube. They can completely replace your air conditioner(s) on your home, provided you follow some important steps and make them correctly.

Earth Tubes

We built […]

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