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Originally Posted by Varn
Would have to agree that it would take a heck of a trench to dig a big loop outside the house for air transfer. It would be a monumental undertaking. Big expensive conduit.
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While these cooling systems don't come cheap, putting them in place when the foundations are done, means the digging won't take very long when using a backhoe.
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I am sure that even if were sealed it would house all sorts of nasties after a few years.
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The air can be filtered at the intake, so the critters can't get in.