General Pipe Cleaners' Hot-Shot 320 and Hot-Shot 400 pipe thawing machines are compact units which safely thaw pipes in minutes, without tearing up floors or walls, digging around pipes in frozen ground or using hazardous blow torches, the company says. The Hot-Shot 320 generates 320 amps of thawing power to thaw up to 100' of 1 1/2" pipe — yet weighs just 30 pounds. The powerful Hot-Shot 400 generates 400 amps of thawing power to thaw frozen lines up to 175' long and 1 1/2" in diameter. Hot-Shot units are also easy to use — just attach the clamps to the frozen pipe section and plug the machine into any convenient 115 V outlet. In just minutes, the frozen pipe thaws out, General says. Safety features include thermal overload protection and circuit breakers. Made in the U.S., General’s rugged devices also feature heavy gauge steel cases and carry a two-year warranty. General Pipe Cleaners.