09-28-19, 09:11 AM | #6 | ||
Supreme EcoRenovator
Join Date: Mar 2009
Location: Portland, OR
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I think that if the same attention was given to GSHPs as has been given to ASHPs, there would be big improvements there too. The physics of extracting heat from deep ground contact is absolutely better than extracting heat from ambient air. It's a matter of refinements, in my opinion I'm fortunate to live in an area with fairly mild (low 40s to mid 30s), usually even winters. Which favors ASHPs. However, occasional dips, when an Alaskan cold front drops temps to low teens, for a few days, then the ASHPs are working hard. -AC.
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