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Replying to

elsat

Its a heat exchanger.

The ground is cooler than the air in the hot summer.

Outside the desert you can use a water loop as well and/or run the loop through a water body.

Curious - what sort of trench depth are you digging, what size duct, for what sq ft / area home?

n0>1 9mo ago

I am not sure yet. It's going to be a 20' circle essentially. I plan to go 3 feet or so. Deeper if needed. Though about using rocks to fill I the space of a tube if some sort. I am open to suggestions

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Discussion

elsat 9mo ago

I am curious how you went about choosing these dimensions

n0>1 9mo ago

I found ceiling joists for free.

The depth I am guessing. I just make stuff up really and it tends to work out.

elsat 9mo ago

Where do the ceiling joists come in?

Epic project. Looking forward to hearing updates

n0>1 9mo ago

This abandoned trailer. We also got an epic shower upgrade from it. Major quality of life improvement for free..

Hofer99 9mo ago

My man.

Blazar 9mo ago

Are you using earth bags? Or tires? As your outer walls a la an earthship?