When Was HVAC Equipment Invented and By Whom?

Let’s take a walk back in time to remember those who invented the world we live in now and maybe even thank them for the amazing invention of heating and cooling for the home or office.

It is something many people take for granted but it has made the lives of most people a lot better, especially in those southern climates where the temps can get quite toasty.

The HVAC system was invented in the early 19th century by American inventor Oliver Evans. Evans’s system, which he called the “evaporative cooling system”, was first used in textile mills to control the temperature and humidity of the air. In 1881, English engineer Sir William Thomson (later Lord Kelvin) patented the thermostat, which he used to regulate the temperature of his oil heater. The first HVAC systems using the thermostat were installed in factories and office buildings in the late 19th century. In 1902, American engineer Willis Carrier invented the AC unit, which he used to cool the air in a printing plant. The AC unit quickly became popular for its ability to evenly cool large spaces. In 1925, Carrier introduced the first HVAC system for residential use. The system, which he called the “heat pump”, was designed to both heat and cool homes. Today, HVAC systems are used in a wide range of applications, from small homes to large office buildings and industrial facilities. HVAC systems are an essential part of modern life, and their invention has had a profound impact on our world. It is always good to remember the heroes of the world.


Cooling system