Camplux Portable Heater, Quick Heat 12000 BTU for Camping and Garage, Outdoor Propane Heater BH1501RHeat Output: The CAMPLUX propane outdoor heater delivers 12,000 BTUs of heat, providing up to 6 hours of warmth from the ceramic plate burner. This buddy heater is compatible with both 1 lb and 20 lbs propane tanks(gas & hose not included) Safety Precaution: The LP gas heater features an automatic shut off in case of low oxygen (ODS) or unexpected tip over. If used in enclosed areas or if tilted knocked over, the outdoor heater will cut off the gas