We start cooling are coach down early about 8 AM when were in the Southwest. We open all the doors and windows until it starts to heat up with both fantastic fans on. We use a chrome type Sun reflector on all windows on the sunny side of the coach. We put our awning out. I used water my first year to cool down the coach which worked but after the first time I stopped due to big ugly hard water spots. Also I use winter pipe insulation on my windshield wipers my first year in the SW the blades melted onto the windshield. I would also wet the ground down around the coach to stop radiating heat which helped. I would not do that now do to the water shortage in the SW.