Radiant Portable Heater: Mr. Heater 200,000 BTU MH200CV Propane Convection heater propane supply characteristics from 75,000 to 200,000 BTU heater heat up to 4700 square feet, ideal for industrial / commercial spaces Runs up to 29 hours at low temperature; push Piezo ignition button, hold for safety so requires propane tank 100 pound (not included), 10 foot hose and regulator included measures 18-1/4 by 15 by 27-1/2 inches 1 year limited warranty I was very pleased that the unit today. I used the heater several times over the last 2 months.Today, I warm up the garage and spent the morning and then stop the machine and ran some errands....