Ductless Mini-split maximum tubing run?

I’m in the market for a ductless mini-split, and while looking around I found units at the orange box and the blue box with 23 feet of tubing, which makes me wonder:

A) Is there a maximum length to the tubing on a split system? I need more like 100 feet to put the outside unit where I want it.

B) is there something special about 23 feet? why not a nice round 25?

C) Do I need an installer for this? I work maintenance and can do my own plumbing and electrical, but I’m not HVAC licensed or anything.


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