The DEWALT 140, 000 BTU forced air kerosene heater is up to the task, whether on the job site, in the workshop, garage, or around the farm. Quickly heats up to 3, 500 square feet with a factory installed thermostat to maintain a comfortable and warm environment. Designed with heavy-duty flat free urethane wheels, high output fully enclosed motor, large glove friendly controls, durable powder coated tubular steel frame, and a split upper shell designed for easy maintenance, you can expect long life and faithful service. Have peace of mind with a high temperature safety shut-off switch and a photo cad cell flame sensor that will shut down the unit in unsafe conditions, so you can focus on the task at hand and get the job done.