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Heat pumps sold so fast in Maine, the state just upped its target
(www.canarymedia.com)
I am confused. I though heatpumps required you to drill down far underground and pump up warm air while pumping down cold. This article makes is sounds like people are just installing A/C units in backwards. Don't you need to drill something for heatpumps?
This is a most excellent place for technology news and articles.