The Serious Toaster Ground-Thawing Machine uses patented infrared technology to thaw frozen ground and is CSA-approved. Ideal for underground installations, each unit thaws up to 1.6" deep per hour in a 2' x 10' area. Multiple units can be placed together in a series or any other configuration to accommodate larger applications. The product is controlled by a solid-state electronic system, and it is fueled by propane. Weighing 345 lbs. each, the unit can be placed in hard-to-reach areas. The product is built for use in extreme conditions.