Short answer: Keep space heaters at least three feet from anything that can burn, plug them directly into a wall outlet, never leave them running when you sleep or leave the room, and choose a model with tip over and overheat shutoff.
Space heaters are a leading cause of home heating fires in winter. A few simple habits make them much safer.
The main rules
- Keep a three foot clear zone around the heater
- Plug it directly into a wall outlet, never an extension cord or power strip
- Turn it off when you leave the room or go to sleep
- Place it on a hard, level floor, not on rugs or furniture
- Keep children and pets away from it
Choose a safer heater
- Look for tip over and overheat shutoff
- Look for a safety listing mark from a testing lab
- Choose a model with a cool touch case for homes with children
Warning signs
- A plug or outlet that feels hot
- A burning smell
- A damaged or frayed cord
- The breaker trips when the heater runs
Fuel burning heaters
Kerosene and propane heaters produce carbon monoxide. Use them only if they are made for indoor use, with ventilation, and with working carbon monoxide alarms.
When to call a professional
If a space heater keeps tripping a breaker or an outlet gets hot, stop using it on that circuit and have an electrician check the wiring.
Frequently asked questions
Can I leave a space heater on overnight?
It is not recommended. Turn it off when you sleep.
Are oil filled heaters safer?
They stay warm without glowing parts, but they still need clearance and a wall outlet.
How far should a space heater be from a bed?
At least three feet from bedding, curtains, furniture and anything else that can burn.
Related
Read our prevent house fires guide and our breaker keeps tripping guide.
For more background, see the U.S. Fire Administration, and if you need help, Sifixit can connect you with a local provider.
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