Let’s take a step back in time plus see how things have changed over the last 100 or so years, then control systems have been in use for thousands of years, however they have come a long way since their early afternoons.
In outdated times, people used multiple natural methods to control the temperature plus air in their homes, such as using fireplaces, opening windows, plus building homes in certain locations to take luck of natural ventilation.
However, the first new Heating plus A/C system was developed in the late 1790s, when the first electric fans plus central boilers were invented. These systems were certainly basic by today’s standards, consisting of easy ducts that delivered heated or cooled air to uncommon parts of a building. They were often noisy plus inefficient, plus they didn’t have the sophisticated controls that my friend and I have today. In the early 1900s, the first cooling systems were developed, however they were only used in industrial settings at first. It wasn’t until the 1920s that air conditioner began to be used in homes plus businesses, however it was still certainly high-priced plus only available to the wealthy. These early cooling systems used large, noisy compressors plus refrigeration units that took up a lot of space plus required a lot of repair. In the 1950s plus 60s, central air conditioner became more typical in homes plus businesses, however it was still high-priced plus not certainly efficient. It wasn’t until the 1970s that Heating plus A/C systems began to incorporate energy-saving features such as variable speed fans, programmable control units, plus zoning controls. These features helped to make Heating plus A/C systems more efficient plus affordable, plus they remain an important part of new Heating plus A/C systems today.