Just wandering how well the 384 AC cools in hot weather? I noticed no airflow from the bathroom vent with just the living room ac on. I got to checking to make sure the vents were all sealed good and found that the sky light in the bathroom goes right through the duct work. So there is no race track here. I just bought it new last month and have not yet had to run the ac, so just wanted to know how well they work in the 384.