How Well Does The House A/C Work On The Sprinters?

The ways we save is to plan our lengthy trips to coincide with temperate weather. So we have rarely encountered 100F temps. We also have a screen on our side sliding door and our double doors on the back. So, when in the campground we can open up the van to equalize with the outside temperature. With our previous B we would get the high build up of heat inside. It was over 90F this day boondocking in the Arizona desert. It cools off at night.