Call your gas or electric utility and ask for a home energy audit to help you identify the measures your home requires. We do not recommend using an unvented kerosene heater in your home. The exhaust from a kerosene heater is dangerous, containing nitrogen dioxide, nitrous oxide, particulates, unburned hydrocarbons, and possibly carbon monoxide. Exposure to carbon monoxide is extremely dangerous. If you need additional heat in a room, electric space heaters can be economical and efficient.
Safety is a major concern in using space heaters.
Poor placement of space heaters is a major cause of fires. Do not place near curtains, furniture, or other combustibles. Never use an extension cord with an electric space heater. Consider replacing any electric space heater built before 1987, when manufacturers began using better power supply cords. Always follow the manufacturer's instructions.