2014 Wacker Neuson E2200, Thaw 2200 - 4400 Sq. Ft. Standard, Thaws between 2,200 and 4,400 sq/ft of frozen ground, cures concrete up to 4,400 sq/ft, prevents frost for up to 6,600 sq/ft, or heats a workspace of up to 360,000 cu/ft. of dry heat at 87% efficiency, the highest in the industry. ?This 150 gallon diesel fuel tank allows for 130 hours of run time, and produces 252,000 BTU/H. Unit comes with Onan generator.