Fenster-Klimageräte oder Split-Systeme: Was ist besser gegen die Sommerhitze?

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That said, mini splits are becoming more and more popular for the long-term thanks to their quieter noise and better cooling efficiency. Above all else, the biggest difference between the two systems is installation. A window AC is simply a single self-contained unit that sits in an open window and cools one room at a time.

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A mini split connects multiple units to refrigerant lines and indoor and outdoor components. That design lets mini splits distribute cooling more evenly throughout different parts of the home. When to choose a window unit vs a mini split antoniodiaz/Shutterstock Efficiency is nice and all, but your biggest deciding factor might come down to cost.

If that's the case, window units have the advantage over mini splits.

Popular models can be purchased for well under $500, and installation usually only involves mounting the unit in the window and plugging it in. (Maybe adding some insulation if there are any gaps, as well.) And because they're portable, they can also move with you from one place to the next without a complicated uninstall.

Technik und Auswirkungen

If you're a renter, this is almost certainly the best option for you. Mini splits are better for people who own (or people with lax landlords, as rare as that might be). Yes, they're quieter, more energy efficient, can handle both heating and cooling, but they also have to be installed by a pro.

Mounting indoor air handlers and routing refrigerant lines through walls isn't exactly a DIY project. Whole-home mini-split systems will also run you thousands of dollars more than a window unit, and that's even before the cost of install. Still, if you've got the funds and the ability to put one in, it's likely to do a better job than a window unit alone.