Timeline Of Memorable Modern Events
1902: Willis Carrier, who is considered the inventor of modern air conditioning, created a machine that helped keep paper from being damaged by humidity during manufacturing. Similar to Dr. Gorrie’s machine, air blew over cold coils to control the temperature.
1905: Albert March discovered the alloy chrome, which gave electric heaters the resistance wire they needed in order to work.
1925: This was when air conditioning went to the movies. Since the theater’s audience size and profits were both decreasing, Carrier convinced the Rivoli Theater in New York City to add one of his air conditioning systems. It was a great success, as many crowds gathered to not only take in a movie but also enjoy cool relief from the sweltering summer heat.
1931: Inventors H.H. Schultz and J.Q. Sherman created the first individual air conditioning unit made to perform on window ledges. The public had access to these devices, but the units were too expensive for most people.
1935: Scientists invented convection wall heaters that used a coal furnace, electric fan, and ductwork throughout a home.
1939: Packard became the first automobile manufacturer to offer an air conditioning unit in its cars.
1940s: Robert C. Webber created and popularized the direct exchange ground-source heat pump.
1950s: Air conditioners began to show major improvements from the early days of Carrier’s system. During the post-WWII economic boom, millions of AC units were installed in homes across the country.
1970s: Air conditioning was revolutionized during the 1970s. Ductless air conditioning systems were offered as an alternative to standard portable AC units. This new system allowed air conditioners to be used in ceilings and walls, instead of just windows. A new refrigerant called Freon was developed, which improved efficiency and gave homeowners a new level of comfort.
1970s: The energy crisis propelled the federal government to invest in HVAC research and technology. The cost of fuel had escalated, and America encountered a shortage of energy.
1994: Freon’s chemical compounds were causing a depletion of the ozone layer. Freon was banned in many countries, and scientists searched for more environmentally friendly coolants. Over the next decade, the federal government invested millions of dollars into research on air conditioning and refrigeration improvements.
2000: The upgrading of smart technologies allows homeowners to monitor temperature and control HVAC systems in their homes remotely. By 2007, 86% of American homes featured air conditioning.