Ask This Old House home technology expert Ross Trethewey visits an off-grid home in South Carolina that’s testing commercial HVAC equipment.
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The chiller that efficiently moves heat was manufactured by Multiaqua (http://www.multiaqua.com). The hot and cold storage tanks are manufactured by CALMAC (http://www.calmac.com).
Additional assistance with this project was provided by Old Sturbridge Village (https://www.osv.org)
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