Engineering the Future of Heating, Piping and Air-Conditioning Systems
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Quizzes
DBDH.org
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HPAC 2025: Our August Quiz!
*ANCIENT INNOVATION* For nearly 3,000 years, engineers have been perfecting the use of district energy to heat networks of buildings. Dive into that history and answer 5 questions...
Aug. 1, 2025
GolfCuk/iStock / Getty Images Plus
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HPAC 2025: Our July Quiz!
July 1, 2025
Arizona State University
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HPAC 2025: Our June Quiz!
June 1, 2025
Pixel Stock/iStock / Getty Images Plus
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HPAC 2025: Our May Quiz!
May 1, 2025
Refrigerant School Inc.
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HPAC 2025: Our April Quiz!
April 1, 2025
Alpha Mechanicals
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HPAC 2025: Our March Quiz!
March 1, 2025
AHR Expo
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HPAC 2025: Our February Quiz!
Feb. 1, 2025
Dreamstime_Piping.621957586ca7f
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HPAC 2025: Our January Quiz!
Jan. 1, 2025
University of Virginia Press Office
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HPAC 2024: Our December Quiz!
Dec. 2, 2024
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