The best window air conditioners for 2024

We’ve put together a few performance charts to make it easy for you to see exactly how each unit fared in our tests. In the graphic below, you will see different charts for larger and smaller units.

The Keystone unit tops the larger units, maintaining a 68F set point for 54.3% of its run time, followed by the Toshiba unit at 35.1% and finally the Frigidaire unit at 26.5%.

The GE Profile AHTT08BC dominated this test, taking first place among the smaller units with an impressive 94.7%, while GE’s other unit maintained 68 degrees Fahrenheit for 32.5% of its run time. We’re not directly comparing the performance of the larger and smaller units, but it’s worth noting that the AHTT08BC comes out on top overall, blowing away all other units with its ability to maintain a set temperature of 68 Fahrenheit.

In the second test – how well each module maintains its lowest temperature – the results were much closer. Among the larger units, Frigidaire came in first at 58.9%, followed by Keystone at 54.3% and Toshiba at 43.7%.

The GE Profile AHTT08BC maintained its lowest temperature 61.6% of the time, while the GE AHEC05AC maintained its lowest temperature 53.6% of the time.

For the next set of charts, we looked at the temperature changes of each unit over time.

Among the larger units, the Frigidaire, Toshiba, and Keystone units followed very similar patterns while operating at the 68-degree set temperature.

The chart of the smaller units is more interesting, showing that the GE Profile AHTT08BC cools much faster than the AHEC05AC. AHTT08BC cooled faster but had more dramatic temperature changes. AHEC05AC cooled more slowly but showed less overall variation.