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<blockquote data-quote="Davy Crockett" data-source="post: 288228" data-attributes="member: 367">lycan,&nbsp; If I was starting from scratch I'd put some serious thought and research into an air to air or even a hybrid system&nbsp; and combine it with a walipini and get 3 birds with one stone.&nbsp;&nbsp; greenhouse/root cellar/mechanical room.&nbsp; &nbsp; In theory this seems like an awesome system.&nbsp; &nbsp; &nbsp; &nbsp;&nbsp; My livelihood was installing vertical wellfields but mostly for large industrial commercial systems because they pencil out to be a no brainer but residential is borderline feasible.&nbsp; &nbsp; &nbsp; I am not &quot;in the loop&quot; anymore on the technical end of things but with a little design work this seems like the most feasible option to install a geo system.&nbsp; &nbsp; Geothermal is a fairly new industry and the consensus was in the early years that North Dakota was too cold for trench systems but better heat pumps and controls have proven them to be very efficient.&nbsp; &nbsp;&nbsp; Anything above 32 degrees is heat so the complaint with old air to air systems is that they were useless when it is cold out.&nbsp; &nbsp; There are walipini green houses growing oranges&nbsp; in the upper Midwest and to my knowledge they are doing it without heat pumps so that tells me something.- - - Updated - - -&nbsp;&nbsp; &nbsp;&nbsp; Every time I see the pile of coils by the Buxton exit that light bulb goes off in my head.</blockquote>

[QUOTE="Davy Crockett, post: 288228, member: 367"] lycan, If I was starting from scratch I'd put some serious thought and research into an air to air or even a hybrid system and combine it with a walipini and get 3 birds with one stone. greenhouse/root cellar/mechanical room. In theory this seems like an awesome system. My livelihood was installing vertical wellfields but mostly for large industrial commercial systems because they pencil out to be a no brainer but residential is borderline feasible. I am not "in the loop" anymore on the technical end of things but with a little design work this seems like the most feasible option to install a geo system. Geothermal is a fairly new industry and the consensus was in the early years that North Dakota was too cold for trench systems but better heat pumps and controls have proven them to be very efficient. Anything above 32 degrees is heat so the complaint with old air to air systems is that they were useless when it is cold out. There are walipini green houses growing oranges in the upper Midwest and to my knowledge they are doing it without heat pumps so that tells me something. [COLOR="silver"][SIZE=1]- - - Updated - - -[/SIZE][/COLOR] Every time I see the pile of coils by the Buxton exit that light bulb goes off in my head. [/QUOTE]

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