Now that summer is coming up quickly, you will certainly be engaging your ACs a lot, and therefore, to honor the men and women who work hard to repair and keep the ACs working, the National HVAC Tech Day is in place. In the brutal summer heat (especially around the equator), it is crucial to keep your AC functioning well. At times, as we enjoy the luxury offered by the ACs, we need to sit back and imagine how it looked when air conditioning never existed so that we may appreciate the local HVAC tech. Remember that your HVAC professional helps reduce your carbon footprint when they help you select and maintain efficient heating and cooling systems.



ARS/Rescue Rooter, a national provider of home services, founded the National HVAC Tech Day in 2016 to appreciate all HVAC technicians in the industry as we explore the history behind the development of air conditioning. 


Romans were the first to have a central heating system that channeled hot air from a furnace through pipes inside walls and beneath floors. Early Korea also had a similar system of heating the air using excess heat from cooking stoves. Moreover, Muslim architects have constructed underground pipes to warm the entire building.


On cooling, Ancient Egyptians hung cold towels in the windows to let air come into contact with them and cool off inside residents. China invented fans near water fountains in 200CE that blew cold air through the room. In the 18th century, Benjamin Franklin advanced this when experimenting with chemical evaporation by discovering how to frozen surfaces. Immediately after the turn of the century, Chromel (an alloy of Chromium and Nickel), 300 times stronger than other similar materials at the time, was discovered by Albert Marsh, regarded as "the father of the electrical heating industry.” Finally, Willis Carrier invented the first modern air conditioning unit by reversing the heating process.


  • Cold Theaters
  • Cinema throughout all theaters was the first industry ever to use air conditioning.

  • Air Conditioned White House
  • Ironically, the first president to use air conditioning in the Oval Office was Herbert Hoover, who invented the first vacuum cleaner that sucks air rather than blows it.

  • Cash Unit
  • Over 1 million AC units were sold in the US in 1953.

  • The Cost of Keeping Cool
  • The average family today spends $2,000 annually on energy bills, with half spent on keeping the house warm or cool.

  • Weakened Humans
  • According to scientific studies, our reliance on air conditioning has reduced our ability to handle extreme heat.


    Brave Techs

    These techs crawl spaces, attics, and all places in between.

    Extreme Conditions

    Working in the heat daily is a harrowing experience, but our techs must work through such harsh conditions to fix our Ac.

    Less Money

    By helping you to select and maintain efficient heating and cooling systems, HVAC techs also help you reduce your carbon footprint. 

    HVAC Industry Statistics

    The U.S. HVAC services market size in 2022 stood at $25,221.3 million and is expected to grow at a CAGR of 4.5% between 2022-2030 to reach $35,971.7 million by 2030

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