Airless spray guns are tools used for painting and coating surfaces without the use of compressed air. They work by using a high-pressure pump to force paint through a small nozzle, creating a fine mist that evenly coats the surface. This method is efficient for large areas and provides a smooth finish. These spray guns are commonly used in both residential and commercial settings, making them popular among contractors and DIY enthusiasts. They can handle a variety of materials, including latex paint, stains, and sealants, making them versatile for different projects.