Interesting AC problem

[PcHistorian]

I think since y'all are kicking the A/C design(s) around we should really kick it in the ass, once and for all. Ok, Mike so you can... make a shelf over the intake of your wall (window type a/c) unit and that would pretty much restore your storage space, shelf space and maybe even make a duct for the cooling output that deflects that part upward and away so that you don't cool the "input air sensor" that makes the unit shut off. And while I agree that this was the problem of the a/c to begin with, it is not really a great and viable solution to making the a/c work better for the interior. As a kid we used a unit that size to cool an area of the house that could park 3 or 4 teardrops.

Obviously, the best thing to do is to insulate the walls and ceiling from the heat and the sun in the first place. BUT, as the home designers in California know, you want the warm air intakes close to the ceiling and the cold air ducts close to the floor. This gives you maximum consistent temperature inside, and is actually a more efficient design overall, because the heat rises and the cold falls. If you did it the old fashioned way even though you shot the air upward, first thing the cold air is going to do is to fall and leave any hot air at the upper half of the interior. (that means your head will still be hot and your feet cooler.) And even though you have the intakes in the opposite half of the trail, the lower half, you are sucking and blowing in the exact same amount (volume), you will end up sucking the air back to the intakes as a loop, near the a/c unit, just like one of those flyback ball and paddle things and you are not going to cool the entire interior.

So if you really want the best job done, put the warm air intakes, duct them if you have to, near the ceiling. Put the cold output near the floor.

If you really want to get efficient then put them on opposite walls as well. That way the entire interior air volume is between the air out and the air in, so it all exchanges. This is if the thermostat is measuring air temperature at the air intake to the a/c.

(just because the guy who made window air conditioners knew about compression and expansion of thermodynamics, doesn't mean he knew his ass from a hole in the wall about room air currents and heat convection. Convection and pressurization of gases are two different principles of physics. And obviously the backers just want money so they marketed as fast as they could and "screw the ignorant consumer/see it blows cold air"...)

In the winter you want the opposite, you want the cold intakes near the floor and the warm output near the ceiling, and the air temp over the whole thing will equalize to the thermostat setting, for a forced air system.

(anyway, that's my $0.50 cents worth of $0.02 cents worths. ;-)

[Shadow Catcher]

I understand the ducting issues but there are ways to over come stratification issues. Both the go's into and comes out of hoses are one above the other. There is a louver which directs the cold air up, and I run the fans with the hatch closed. There is also the bilge blower helping air through the system.