I've come across a few battlewagons in the 60-80 ft range advertised with A/C in the engine room. What is the biggest reason for this? My first thought is it obviously makes it more comfortable to do maintenance in the engine room on a hot day. Is this the only reason? Do some like to use the A/C in the engine room after a run to cool the engines off quicker and help keep the heat load from coming into the salon? How about running the A/C while the engines are running and the boat is in use to keep engine room temps lower? (somehow I don't see that making much difference especially if you have a system like delta T or the like moving a fair amount of air through there) Perhaps keep it on to keep the engines more dry (less humid) when the boat is sitting inactive? Or is it a combo of all the above. I'm just asking out of curiosity as this is interesting to me.