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Old 02-21-13, 10:39 AM   #60
Drake
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Join Date: Jan 2011
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What about incorporating a loose continuous loop coil(like in geothermal ground loop design) on top of can to preheat DHW. Would it "steal" much from the air heating performance? Copper tubing best but Black poly pipe would be that less efficient I don't think for the cost savings.
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