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Take the heater outdoors each time it is refilled to prevent a spill inside the house.
If you are considering a new heater, buy one that shuts off automatically if it is knocked over. Buy a heater that can be vented to the outdoors; otherwise, use electric heaters.
If the heater is not vented or does not have a two-stage burner, follow the manufacturer’s recommendations about leaving a window open while the appliance is in use. This is a necessary step, since heaters take oxygen from the air and it
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