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Product Review from Environmental Building News
December 1, 2006
Cold Climate Heat Pump Redux
The two-stage high-capacity heat pump that was introduced in 2004 (see EBN Vol. 13, No. 7) and then discontinued in 2005 (see EBN Vol. 14, No. 10) is back, and from more than one company. This product uses a booster compressor that makes it viable as an air-source heat pump even in very cold weather. David Shaw, designer of the original, has joined forces with former product manager Duane Hallowell to relaunch the heat pump as the Hallowell All Climate Heat Pump with patented Opti-Cycle™ Technology. Meanwhile Nyle Special Products, LLC, producer of the original Cold Climate Heat Pump, is releasing a redesigned version of its own....
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