WHY DO MOSQUITOES NOT BITE WHEN AC or FAN IS ON?

The reason is the temperature range. The mosquitoes will breed and spread in a temperature range of 25–38 degrees Celsius. If the temperature is lower than 24 or 25 degrees Celsius, then, mosquitoes become inactive. Likewise, if the temperature exceeds the 40 degrees mark, then, mosquitoes disappear as well. Therefore, it’s to do with the temperature range.

Several other reasons:

1. Mosquitoes detect heat. If you lower your skin temperature then you are not identified as easily.
2. Air conditioning creates a breeze, this makes it harder to fly. This is the same reason why mosquitoes do not tend to bite you when it is windy.
3. Air conditioning dries the air, Mosquitoes seek out moist locations.
4. Usually Air conditioning requires doors closed. Mosquitoes thus find it hard to enter the home.
5. A breeze blows carbon dioxide around, thus making it hard for mosquitoes to identify the source.