You will see mostly positive reviews if you look online at the reviews for this product. A 550ml tank of water is included to ensure that the portable AC runs as long as possible. If you want to know more, please contact us. The portability and ease of installation are a huge win for the portable air conditioner, but when it comes to space, window air conditioners have the advantage. A blinking charger light indicates when the device is in charge, while a steady light indicates it's fully charged. BTUs are British Thermal Units. We tend to be skeptical about the health claims made by these ionizers. The Whynter ARC-14S, like all dual-hose portable conditioners, doesn't need to be drained very often. You can adjust the airflow up or down by moving the air direction tab. ChillWell uses an evaporative method to cool the air around you. It is small in size compared to a conventional AC. While ChillWell AC has its advantages, it also has some limitations, including limited cooling power and runtime. Indoor air can be contaminated with dust, pollen, and many other things. It will also last through the extreme heat/humidity in summer.