Heat King HK300 Ground Thaw Heater Request Quote Download a Product Brochure Please contact your nearest store for rates and other details. Specifications Product Specs General Description Mobile Glycol Heating System Ground Thawing Capacity up to 5,600 ft2 Concrete Curing Capacity up to 11,200 ft2 Temporary Heating Capacity 12,000 ft2 Heater Capacity Diesel 311,000 BTU Heater Capacity LP/NG 300,000 BTU Run Time Up to 120 Hours