The ideal choice for safe indoor supplemental heating. The Dyna-Glow 23,800 BTU Indoor Kerosene Convection Heater is great for use in your home, basement, garage, or at the cabin. Because this heater does not require electricity to operate (batteries are included), it makes an excellent choice for both everyday zone heating as well as for emergency situations when the power goes out. Indoor kerosene heaters use ONLY 1 K kerosene, burn up to 99.9 efficiency, and operate with a side switch on and off design.