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Old 03-05-15, 05:31 AM   #8
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Originally Posted by theoldwizard1 View Post
I was reading on another forum about folks who had installed horizontal loops at 12-15' deep, actually getting inlet water from their loop well below freezing ! Sure, it has been cold in the Midwest USA, with temps below 0F, but if your inlet water temp is below freezing, IMHO, you have a SERIOUS design/installation flaw !
You can still get reasonable performance from a HP when the installation temps are below freezing. Just don't let the installers skimp on tubing. Remember that and ASHP starts losing efficiency well below that.
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