ElI5: Why does 70 degree heat and 70 degree AC feel so different when they are the same temperature?
In: Other
Motion of the air and humidity can play a large part. The air conditioned house can significantly less humid than the outdoors. The air blowing on you speeds up evaporation on your skin and feels cool.
When outside the sun is also shining on you which warms you as well
Humidity is a huge part of how we feel temperature. When the humidity is high, our perspiration does not evaporate well, making us feel warmer.
Air conditioners lower humidity as a side effect of cooling the air. The dryer air they emit allows perspiration to evaporate, further cooling us.
Sometimes they air they emit is too dry causing sinus problems so people occassionally add humidifiers to restore a bit of the humidity.
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