| A complete system of air conditioning, heating, and ventilation is called HVAC | Between air conditioners and fans, air conditioners are more effective and can make a room much cooler than fans, as fans need to have some specific surrounding environments in order to work properly |
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| Fans came out first in India about 500 BCE, while air conditioners were invented and used in USA 1902 | On the other hand, fans rotate an assembly of vanes or blades to produce currents of air with high volume and low pressure, together with the hub this set is called an impeller or a runner |
Air conditioners use a fan to distribute the conditioned air to an occupied space to improve thermal comfort and indoor air quality.
9| The size of the AC unit determines whether it can cool a small room or an entire skyscraper, some of these machines can control humidity as well | |
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| The Differences Between Air Conditioners and Fans Air conditioners and fans both provide cooling, with the addition of heating exceptionally for the air conditioners | Most fans are powered by electric motors, while some use other sources of power like hydraulic motors, internal combustion engines, and solar power |
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