The Mr. Heater 25,000 BTU Portable Propane Convection Heater. Stay warm when you’re working hard! Convert your garage, barn, or tool shed into a year-round workspace! This Mr. Heater 25,000 BTU Portable Propane Convection Heater delivers chill-chasing warmth when you’re working on your truck, farm equipment, ATV and more! Includes 10′ hose and regulator. Heats approximately 625 sq. ft.. Runs for up to 17 hours on a 20-lb. propane tank (not included). Standing pilot for increased safety. Piezo push button igniter. Instant locking chamber for easy assembly. Includes 10′ hose and regulator. CSA Certified.