A dehumidifier is an electrical device designed to reduce and maintain the level of humidity in the air. It works by drawing in moist air, removing the excess moisture, and then releasing drier air back into the room. This helps to create a more comfortable living environment and can prevent issues like mold growth and dust mites. Dehumidifiers are commonly used in areas with high humidity, such as basements, bathrooms, and laundry rooms. They come in various sizes and types, including portable units and whole-house systems, making it easy to find one that fits specific needs and spaces.