Slide 9: Giant AC

This mammoth 25,000-BTU unit is powerful enough to cool a 1,600-square-foot room or even an entire small home, earning it a Best Option designation from, which found it to be "the most powerful A/C we have reviewed.” The Energy Star-rated unit incorporates some of the most technologically advanced features on the market, including digital controls, a special antibacterial air filter, and a remote control that acts as a mobile thermostat. Price: $649.99.

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