Do not use a space heater where it can ignite nearby items, get wet, tip over, or operate unattended. Check the heater’s manual and stop using it if its cord, plug, or operation seems unsafe.
Situations when you should not use a space heater
Do not use a space heater when you cannot keep it stable, dry, attended, and well clear of anything that can burn. Turn it off when you leave the room or go to sleep. Follow the heater’s manual and any stricter safety instructions it provides.
Near anything flammable: Keep the heater at least 3 feet from bedding, curtains, furniture, paper, clothing, and other combustibles. Do not drape clothes over it or use it to dry laundry.
Where it could get wet: Keep ordinary indoor heaters away from sinks, tubs, showers, and damp locations. Use a heater in a bathroom only if its manufacturer specifically approves that location and explains how to use it safely.
On an unstable or unsuitable surface: Place it on a firm, level surface where it cannot be knocked over. Do not put it on furniture or in a walkway. Follow the manual’s directions for floor coverings and placement.
With children or pets nearby and unsupervised: The housing and outlet air can become hot, and a heater can be pulled over. Keep it out of reach and supervise its use.
With a damaged cord, plug, or heater: Do not use a unit with frayed wiring, a loose or damaged plug, a cracked housing, unusual smells, sparks, or repeated overheating. Unplug it if safe to do so and have it repaired by a qualified professional or replace it.
On an extension cord or power strip: Plug a portable electric heater directly into a wall outlet unless the manufacturer explicitly specifies otherwise. Do not share the outlet with other high-power appliances. If the plug or outlet becomes hot, stop using the heater and have the outlet checked by a qualified electrician.
Around flammable vapors: Do not operate a heater near gasoline, paint thinner, aerosol sprays, or other flammable liquids or vapors.
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Do not use the wrong kind of heater indoors
An electric space heater does not produce exhaust while operating. Fuel-burning portable heaters are different: they can create carbon monoxide and need to be specifically approved for indoor use, installed or operated as directed, and used with the required ventilation. Never use an outdoor-only heater, grill, or fuel-burning appliance to heat an indoor room. Use working carbon monoxide alarms as directed for your home and heater type.
If someone uses supplemental oxygen, ask their clinician or oxygen supplier about fire precautions before using a heater. Keep heat sources well away from oxygen equipment and follow the equipment provider’s instructions.
Stop using it and check the setup
If a heater trips a breaker, smells unusual, makes unexpected noises, or heats its cord or outlet, turn it off and unplug it if you can do so safely. Let it cool, then check the manual for basic setup or maintenance steps. Do not open the unit or bypass a safety switch. If the problem continues, have it assessed by a qualified professional or replace it.
If you need heat while you are away or asleep, use a properly maintained central heating system or another heating option designed for that use—not an unattended portable space heater.
FAQ
Can I leave a space heater on while I sleep?
It is safest to turn a portable space heater off before going to sleep. Follow the manufacturer’s instructions, and do not leave it running unattended.
Can I plug a space heater into a power strip?
Generally, no. Plug an electric space heater directly into a wall outlet unless its manufacturer explicitly says otherwise. Stop using it if the plug or outlet becomes hot.
Is it safe to use a space heater in a bathroom?
Only use a heater there if the manufacturer specifically approves it for that location and provides instructions. Keep ordinary heaters away from water and damp areas.
Can I use a space heater to dry clothes?
No. Keep clothing and other combustible materials away from the heater, and never drape anything over it.
