Originally Posted by Aparition
This is the same thing
Push cooler air in, hot air circulates out. Maybe I was not clear, a door or window would need to be open to let the air exchange. And I was referring more to indoor air exchange with the fan, doesn't have to be with outside air.
My office gets the same way. There is a good 5-10'c difference in air temp after a long session between my office and the hallway outside.
It's not the same thing. If you don't remove the heat you'll never cool the room. I've owned an air conditioning buisiness for over 20 years now and that's just how it is.
That's why I recommended a return duct from the central a/c unit. The reason air conditioning would be better than just an exhaust is because the a/c unit will also remove humidity, which also greatly effects the comfort level.
Also, just trying to force air into a room increases the positve displacement in the room so air will be pushed out the easiest way that it can find, which may be down too low to force hot air high up on the ceiling out. You could end up with a nice cool floor and very warm up near the ceiling. That's why A/C returns are almost always (and should be) up high.