A window is the best option for venting a portable AC, but there are alternatives if a window is not available. Venting is critical; without it, the AC sends hot air back into the living space.

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WHICH WINDOW AIR CONDITIONER IS BEST? Central air conditioning isn’t an option for everyone. Sometimes, you need a good window AC unit to keep you cool. A window AC unit might not be as expensive as ...

As is the case for many people, my home cannot be retrofitted with central air. My 100-plus-year-old Brooklyn apartment, which features prominently in my seven years of air quality reporting for WIRED ...

Many homes don’t have accessible windows for portable AC venting. But proper ventilation is essential. Without it, the portable AC will not function properly and may even heat up the space. If you’re ...