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Air-Source Heat Pumps in Cold Climates (Part III): Outdoor Units - Steven Winter Associates, Inc.
Heat Pump?
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Refrigeration, Air Conditioning and Heat Pumps: Hundy, G F: 9780081006474: Amazon.com: Books
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Refrigeration, Air Conditioning and Heat Pumps - 5th Edition
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A flexible heat pump cycle for heat recovery | Communications Engineering
