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<blockquote data-quote="Allen" data-source="post: 288226" data-attributes="member: 389">Once you start digging down to 25 ft with a hoe, you've lost control of costs.&nbsp; Depending on the construction style of the building/home, you need someone familiar with geothermal systems to design how much &quot;loop&quot; you need for heat exchange with the ground.&nbsp; Putting loops on top of each other by some 5 ft seems to me like a bad idea.&nbsp; You need &quot;X&quot; distance between any overlapping loops in the ground and I'm not sure 5 ft would be enough.&nbsp; By using a trench style installation, you can dig a trench to ~6.5-7 ft with a modest sized backhoe. You just need to know how long of a trench is needed. 

I wonder why a person can't install a geothermal loop using something equivalent to a drain tile plow?&nbsp; There have to be models that go to 6-8 ft depth, no? </blockquote>

[QUOTE="Allen, post: 288226, member: 389"] [LEFT][COLOR=#222222][FONT=Verdana]Once you start digging down to 25 ft with a hoe, you've lost control of costs. Depending on the construction style of the building/home, you need someone familiar with geothermal systems to design how much "loop" you need for heat exchange with the ground. Putting loops on top of each other by some 5 ft seems to me like a bad idea. You need "X" distance between any overlapping loops in the ground and I'm not sure 5 ft would be enough. By using a trench style installation, you can dig a trench to ~6.5-7 ft with a modest sized backhoe. You just need to know how long of a trench is needed. I wonder why a person can't install a geothermal loop using something equivalent to a drain tile plow? There have to be models that go to 6-8 ft depth, no? [/FONT][/COLOR][/LEFT] [/QUOTE]

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