This no-installation, 23,000 BTU Kerosene Heater is powerful enough to heat an area up to 1,000 sq ft for a full 12 hours on just one filling. That makes it ideal to heat large living rooms or other semi-open spaces that require a lot of air to be warmed. It is an economical way to heat that's ideal for everyday use. And it is also especially handy in emergencies, particularly in areas that are prone power outages due to snow storms. This kerosene space heater has a built-in wire grate around it to prevent pets, blankets or children from getting too near to open flame. The grate, however, still allows the heat to radiate evenly. The heater also has a safety switch included in the design.