The Hot-Shot 320 and Hot-Shot 400 thawing machines from General Pipe Cleaners safely thaw pipes in minutes without having to remove walls or floors, or use a blow torch. The Hot- Shot 320 generates 320 amps to thaw up to 100 ft. of 1 ½-in. pipe and weighs just 30 lbs. The Hot-Shot 400 generates 400 amps to thaw frozen lines up to 175 ft. long and 1 ½ in. in diameter. The 400 also allows users to switch to 320 amps and pull just 14 amps. The compact unit plugs into any 115-volt outlet.