Most in-window air conditioners are meant to fit inside vertically-sliding windows only, meaning those with larger, horizontally-sliding windows in their house are left out. DIY web site Instructables ...

Editor’s Note July 28, 2025: Our best overall selection, the Frigidaire Gallery U-Shape Air Conditioner, is currently out of stock across several retailers. Availability is subject to change, but we ...

Looking for more ways to cool off? Check out CNN Underscored’s Guide to Beating the Heat for the products that help us cope with high summer temperatures. The best window air conditioners can turn a ...

The summer months can be brutal, and climate change is causing historic heat waves in parts of the United States. Maybe you don’t have central air conditioning, because your typically cooler area ...

【WIDE COMPATIBILITY&UNIVERSAL】Our air conditioner window kit is suitable for all air conditioner with diameter of 5.9”.The AC vent kit has a humanized rail design which is easy to slide the seal ...

The best window air conditioners we tested can reduce the room’s temperature by 10° F in less than 15 minutes. If your window air conditioner is on the fritz—for example, it’s struggling to produce ...

For those of us without central air, a window air conditioner is the next best thing for keeping cool during the scorching hot summer months. There are hundreds of models to choose from though, which ...

With the hotter months quickly approaching, the heat might be on to find the right air conditioner to keep your home feeling cool. But ACs can also be costly — many of the models we’ve previously ...

TheStreet aims to feature only the best products and services. If you buy something via one of our links, we may earn a commission. Sweltering temperatures outside can turn your home into an ...

On average, window units last around 10 years. That means if your older window unit is acting up in any way or just not performing the way it used to, it's probably time to get a new one. If you're ...