I've done some research on this topic and I have come by a "maybe the solution" solution (I'm loving the word play). If it is getting really hot, you might have to compensate a more powerful MacBook Air fan for a shorter battery life, but if you always use your laptop with your charger, then it's all cool.
There is an application which will allow you to control the "fan power" or the "threshold". This Mac utility will be able to help you control the fan level and hopefully keep your Mac cool as OS runs better on cooler system.
Anyways, here is the link for the application; http://www.lobotomo.com/products/FanCont...
Please note that I have not tried this application, but some of the reviews said that this application worked pretty well, so I guess it might a be a pretty good place to start with.
If this does not work, I will do additional research on this topic and hopefully come up with the solution.
"I hope I helped",