Do home air conditioner drains outside need to slope down

My drain pipe, which is flexible black rubber tubing, (1" I believe, but not pvc) does not really slope down at all on the outside of the house. It actually comes out ot the ground where the exterior wall meets the ground, in a horizontal direction. It was actually totally underground, until I dug up the area for some landscaping.

I want to make a "better" one, but I am nervous because I dont want to raise it too much above the point where it comes outside, but thats impossible because it starts so lowI had an issue with it becoming clogged recently, which led to extensive floor damage inside the house.

I want to make sure that never happens again, so I want to make a better drain tube, out of pvc as most of them are now. I have seen some that run horizontal, then down a bit, horizontal again, then up a bit then drain up.

What are the benefits, if any, of this design?

I am primarily concerned with the drain not clogging up with dirt on the end, and I think it should not be underground. Since the drain would start at ground level where it comes out of the house, it would be impossible to have it slope down unless I dug some type of trench or something.

Is it alright to have it run slightly "uphill" a little before it drains? As long as the drain end is still at a lower level than that of where it starts, it should be alright, correct? It should have no problems of backing up water in the house this way? (as long as it isnt clogged).. dont want to take any chances, as I am about to redo the flooring that was damaged.

I am having a hard time finding drainage examples to work off of online plans, diagrams and such..And most of what I find, the drain starts off much higher and runs at a downward slope..

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Do home air conditioner drains outside need to slope down
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