Enjoy the cool air of nature with the EcoBreeze 2 Smart Window Fan. This device uses nature’s air to cool down your space whenever it is possible. When it isn’t cool enough, your AC takes over automatically. In addition, the EcoBreeze 2 can cool rooms up to 400 square feet. Using the same energy as an LED light bulb, the EcoBreeze 2 saves up to 75% over window fans. Likewise, it uses 98% less energy than air conditioning. To top it off, the smart window fan offers health benefits thanks to its integrated filters, which trap dust, pollen and bacteria. The lightweight and low-profile design of the EcoBreeze 2 makes it easy to install. Just install the support bracket and insulation then close the window and enjoy sustainable cooling.