Mr. Heater Contractor Series 80,000 BTU Black Portable Forced Air Kerosene & Diesel Outdoor Space Heater with Thermostat MHC80KT. Whether you are using it in a garage or on the jobsite, this 80,000 BTU Forced Air Kerosene heater by Mr. Heater is up for the task with jobsite ready split upper shell designed for maintenance, you can expect a long life and faithful service from your Mr. Heater Forced Air Kerosene.