Mr. Heater Heater/Cooker - The Mr. Cooker Tank Top Cooker-Heater is a great source for economical heat for sporting events to ice fishing with the convenience of a cooking surface. Attaches directly to a disposable 1 lb. propane cylinder or may also be used with refillable 20 lb. tank with optional hose. Not indoor safe. Hi-Medium-Low regulator Safety shutoff Use with disposable cylinders Variable output of 8, 12, & 14,000 BTU's