Hot-Shot 320 and 400 machines from General Pipe Cleaners thaw pipes in minutes to eliminate tearing up floors, breaking through walls or digging around pipes in frozen ground. The Hot-Shot 320 generates 320 amps to thaw up to 100 feet of 1 1/2-inch pipe, weighing just 30 pounds. The Hot-Shot 400 has a dual-level output, and its 400 amps can thaw frozen lines up to 175 feet long in 1 1/2-inch lines. On jobs with only a 15-amp breaker available, the unit can be switched to 320 amps and pull just 14 amps. The operator attaches pipe clamps to the frozen pipe section, plugs the machine into any 115-volt receptacle, and the frozen pipe is thawed. The compact machine comes with a heavy-gauge steel case. 800/245-6200; www.drainbrain.com.