The Serious Toaster ground-thawing machine uses patented infrared technology to thaw frozen ground more than three times faster. Suited for underground installations, each unit thaws up to 1.6 in. 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. They are controlled by a solid-state electronic system and are fueled by clean-burning propane. Weighing only 345 lbs. each, they fit in standard pickup beds.