Comfort at its most flexible! No matter how warm it is outside, this portable air conditioner lets you enjoy nice cool temperatures in any room in the house. The portable air conditioner has as heating function and doubles up as a heater during the winter months to help keep you warm. The Full-Auto mode the unit monitors the room temperature and automatically heats or cools as per your needs. It has dual layer mesh with fine filters that not only trap large particles but also finer dust particles too.