Best Outdoor Fans Waterproof Outdoor fans that are designed to be waterproof are ideal for use in outdoor spaces, as they can withstand exposure to rain and other environmental elements. These fans are commonly used on patios, porches, decks, gazebos, and other outdoor areas where you want to stay cool and comfortable.Choose a fan made from rust-resistant and weather-resistant materials such as stainless steel, aluminum, or durable plastics. These materials can withstand exposure to the elements without corroding or degrading. Look for fan blades made from materials like ABS plastic, which is known for its durability and resistance to moisture. Some outdoor fans also feature special coatings to protect against corrosion.