Some owners report that one or two of these units can adequately heat an entire house when the temperature stays above freezing. Convective heaters must be moved for refueling because they don't have a removable fuel tank. Generally, refueling is done with a siphon pump. Be sure a convective heater has a fuel gauge. They also feature a wick and combustion chamber and have, in addition, a reflector which directs heat at people or objects.
Some radiant heaters have electric fans to increase the flow of warm air.
Only the fuel tank needs to be carried to where the fuel is stored. A radiant heater without a removable fuel tank must be moved for each refueling - just like a convective model. The UL label means the heater has performed well under test conditions and meets acceptable fire safety standards. Heaters should have a safety shutoff device, which extinguishes the flame if the unit is jarred or tipped over. Dealing with Hazards A well-designed kerosene heater emits no smoke or strong odor during normal operation.