Emerson HD1300WC0C utilizes evaporative technology to increase humidity levels in your home, alleviating dry air discomforts. Its variable speed fan allows you to customize humidity output, while the automatic humidistat maintains your desired level. The unit features a large 1-gallon water capacity, providing up to 30 hours of continuous operation. It also includes a filter that removes impurities from the water, ensuring clean and healthy mist is released into the air.