Discover the legacy of climate control with the HVAC Historical Society—preserving the past to inspire the future of comfort and innovation.
HVAC—Heating, Ventilation & Air Conditioning—has often been called the greatest invention after electricity. From ancient fire pits beneath homes in northern climates to primitive fans and lakes used for cooling in hotter regions, humans have always sought ways to control their environment. Today, no matter the season, we enjoy stable indoor temperatures thanks to modern HVAC systems.
This website dives into the fascinating evolution of HVAC technology—from the innovations of Willis Carrier to today’s smart systems—by showcasing vintage equipment, badges, gauges, and design milestones that shaped the way we stay comfortable.
HVAC History 
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