"Ed Pawlowski" wrote in message
...

The high-low settings are only for the fan, not the compressor so any
difference is very minimal. The compressor is either on or off and takes
the same power no matter what the fan setting is. To cool the room down,
you have to remove a certain amount of heat and will have a pretty fixed
cost per thousand Btu's removed.

Run the fan to what seems best for the room and noise level you can
tolerate. High circulates more air so the more distant parts of the room
may feel a little cooler faster, low is usually best for sleeping as long
as the cool air is reaching you.

It would seem that for pre-cooling, a high fan speed would be better. The
hot air in the far reaches of the room would reach the return intake sooner.
Then slow it down after it's comfy. Not disagreeing, just wondering.