The Windmill AC with WhisperTech™ is our quietest, most energy-efficient model yet—recognized by TIME as one of the Best Inventions of 2023. Powered by advanced inverter technology, it’s up to 9x quieter and 35% more efficient than traditional non-inverter window units. Forbes called Windmill “the iPhone of air conditioning,” and Wirecutter named it “the easiest AC we’ve ever installed,” thanks to its modern design and pre-assembled installation kit. The 10,000 BTU unit cools spaces up to 450 square feet and connects to the top-rated Windmill Air app for smart scheduling, remote control, and voice commands via Alexa and Google Assistant. With powerful upward airflow, dual-side insulation, an auto-dimming LED display, and eco-friendly R32 refrigerant, Windmill delivers comfort, control, and lower energy bills—all in one. With over 3,000 five-star reviews and counting, it’s one of the fastest-growing AC brands in the country.