Setting up, testing and operating an emergency system. Dealing with related problems caused by heat loss. Don't overlook the oven in your gas or electric range. If the fuel is available, turn the range on and open the oven door. Stoves should be connected to a chimney flue if at all possible.
Many older homes have capped stovepipe thimbles in rooms once heated by stoves.
You can also remove the nonfunctioning furnace pipe from its flue entrance and hook up your stove or heater in its place. Sometimes a stove pipe can be extended through a window to provide proper venting of gases. Be sure no heated surfaces are close to the sash or other flammable materials. When setting up emergency stove piping, be careful about running it too close to flammable materials. This is particularly true when using a window-mounted flue.