U's in forced air ductwork

I am curious if having these U’s (lack of better wording) in the ductwork would possibly cause a issue with say condensation possibly happening in these locations? There is not a central a/c unit just heating. Or is such a configuration is totally irrelevant?

Nothing to worry about.

To answer your question, what are you thinking?

As a Home Inspector, what is your perception of what your looking at?

Such as: The First Law of Thermodynamics states energy can not be created or destroyed, but can be transformed. As condensation is a transformation of energy, this duct design will cause this transformation by…