Vertical Geothermal Earth Tube in New Greenhouse

NEW: Greenhouse 2.0    • Greenhouse 2.0 - Geothermal AND Compo...  
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I recently constructed a small lean-to greenhouse (video here:    • $100 Greenhouse! Wood construction wi...  ) against my screened-in patio. In this video I show you how how I added a Vertical Geothermal "Earth Tube" system to heat and cool the new greenhouse.

The Vertical Geothermal Earth Tube is a low-cost alternative to the conventional Earth Tube, which requires you to dig up your back yard with a backhoe! For more background on this idea, see these two videos (   • Vertical Geothermal Earth Tube (Part ...   and    • Vertical Geothermal Earth Tube (Part ...  )