Is it really feasible to heat a house for an entire winter, using a kerosene heater? And how much kerosene would it take? The answer is yes, and it depends.
The convection heater is usually circular in shape. Its fuel tank is located below the wick and combustion chamber. The wick absorbs and delivers fuel to the combustion chamber.
Convection heaters circulate warm air upward and outward in all directions. They're designed for large areas or even several rooms, but never for a small, closed area such as a bedroom. The heat output of a standard convection heater is in the neighborhood of 23,000 BTU’s.
Convection 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 convection heater has a fuel gauge.
Radiant heaters - usually rectangular in shape - are designed for smaller areas. 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.
Most modern radiant models have a removable fuel tank, which means that the heater can stay in place. 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 heat output of a standard radiant heater is in the general neighborhood of 10,000 BTU’s.
There's also a strong odor from kerosene heaters for several minutes when they're turned on or off and when they run out of fuel. It's a good idea to check the fuel gauge regularly.