Gas heat pump guru hoping for breakthrough year
Success could mean up to 200 local production jobs Story and photos by Jeff Keeling Their blue-clad components in various states of exposure, Michael Garrabrant's “babies” receive some last-minute testing and adjustment in a Johnson City shop. A handful of engineers and technicians tweak and monitor the four gas heat pumps connected to 80-gallon water heaters before their big debut in Pacific Northwest test ...
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