The E1100 Hydronic Ground Thaw Heater is designed to quickly and easily thaw frozen ground, cure concrete, prevent frost and provide temporary air heat during the colder months of the year. The E1100 unit thaws up to 1,750 sq. ft. of frozen ground at a rate of up to one-foot-per day. Couple this unit with ground thaw blankets to better dispense heat over a large area. *Thaw performance will vary based on soil and moisture conditions.