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Old 03-05-15, 08:14 AM   #9
theoldwizard1
Apprentice EcoRenovator
 
Join Date: Oct 2014
Location: SE MI
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Quote:
Originally Posted by Mikesolar View Post
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.
If I ever had a GSHP system installed, there would be a "performance" clause in the contract. If my inlet water temp EVER fell below 40F, the installer would have to repair/replace/agument the ground loop. I would try to hold 50% of his installation fee in escrow for at least 1 year.

If you are going to pay the premium of having a GSHP, you want one that is designed and installed for optimal performance !
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