Heat gun is a versatile, handheld tool that blows hot air for tasks like stripping paint, shrinking heat-shrink tubing, thawing frozen pipes, removing adhesives, bending plastics (like PVC), drying surfaces, and even loosening rusted bolts or applying vinyl wraps, making it useful in DIY, construction, automotive, and electronics. It provides controlled, intense heat for tasks requiring softening, shaping, or removing materials, acting as a safer alternative to torches in many cases.