Earth Tube short...

I have had these earth tubes running for almost a year and they have kept the place warm all winter and cool in the summer. It was 90 degrees on Saturday and I filmed some temps. I'm still going to release a full video looking at the full years performance, but here is a taste for now.

I have been too busy lately to work on a proper construction video, but I hope to release another one sooner or later. ... https://www.youtube.com/watch?v=e31gOBWUJbE