Using patented infrared technology, the Serious Toaster ground thawing machine thaws frozen ground more than three times faster than similar competitive units, and it is the only CSA-approved product of its kind on the market, according to its manufacturer. Ideal for underground installations, each Toaster thaws up to 1.6 inches deep per hour in a 2-foot-by-10-foot area. Multiple units can be placed together in a series or any other configuration to accommodate larger applications. The Toasters are controlled by a solid-state electronic system, and they are fueled by clean-burning propane, making them an environmentally friendly choice. Furthermore, they do not produce open flames, so they can be safely placed next to buildings and utility pedestals.