Desa Tech 400021 is a 20,000 BTU portable heater, featuring an adjustable thermostat, photocell safety shutoff, and automatic ignition for added convenience. The heater is designed to heat up to 1,000 square feet, making it ideal for use in garages, workshops, or other large spaces. The portable design allows you to easily move the heater from room to room as needed, and the included Comfort Center accessory allows you to control the heater remotely.