For the most part when it comes to portable ac vs window ac the window units win.
Portable air conditioner vs window air conditioner.
Also because portable air conditioners are generally larger and start at a higher btu h they will be more expensive than window units with a lower btu h.
The replenishment air will come from any area of the house with an air leak making that part of the house even hotter and more humid than if you didn t have the portable running at all.
Air conditioners are usually quite noisy though you can find quiet air conditioners.
That s because window air conditioners are usually much quieter than portable air conditioners.
Window air conditioners and two hose portables are much better.
Portable ac units hover around 70 db while window ac units tend to be near 50 db which is one eighth quieter.