The purpose of the environmental ventilation controls is to let outside air into your house. This can be managed by opening doors and windows, activating heaters and fans, or just opening a window. Homeowners that care about the environment are searching for methods to lower energy use, save money, and enhance the interior environment of their houses. They also don't want to give up comfort or necessities like air conditioning and heating. To satisfy both objectives, we provide a range of ecologically responsible ventilation controls.