Are space heaters bad for your health?

Author: Carole Herzog  |  Last update: Thursday, September 11, 2025

Overusing the heater or using an oversized heater can result in elevated levels of carbon monoxide or nitrogen dioxide fumes in the air. These fumes can cause cold or flu-like symptoms, headaches, and eye, nose and throat irritation. Don't use these heaters as your main heat source, even during power failures.

Are electric space heaters bad for you?

Space heaters often cause very dry air; this can irritate your sinuses, dry your lips and skin and cause other irritating conditions like nosebleeds and rashes. They can also dry your eyes, making it harder to see clearly after a long day.

Is it bad to sleep next to a space heater?

“No, it's absolutely not safe to use a space heater at night,” states Glenn Gault, CEO at Gault Heating & Cooling. “It's not even safe to leave your space heater running when you leave a room for just a few minutes.

Is a room heater harmful for health?

Room heaters are essential during chilly winters, providing much-needed warmth. However, their prolonged or improper use may lead to issues such as dry air, respiratory discomfort, and overheating risks.

Do space heaters give off toxic fumes?

Vented and Unvented Combustion Small Space Heaters

They may also bring unwanted nitrogen oxide into the home; nitrogen oxide can cause asthma and other respiratory problems. These heaters can also introduce water vapor into the home, which can result in mold and other structural damage.

Is Your Space Heater Causing Your Health Problems?

Is it safe to run space heaters all night?

Running a space heater overnight increases the risk of fire. If the unit is left unattended or placed too close to flammable materials, such as curtains or bedding, it can ignite and lead to a devastating fire.

Is my space heater making me sick?

Overusing the heater or using an oversized heater can result in elevated levels of carbon monoxide or nitrogen dioxide fumes in the air. These fumes can cause cold or flu-like symptoms, headaches, and eye, nose and throat irritation. Don't use these heaters as your main heat source, even during power failures.

What is the safest type of room heater?

While it's not recommended to leave any space heater on if you're not monitoring it, oil-filled, radiant space heaters are considered safer than ceramic convection (hot air) types, according to Roberson. Both of these options are safer than open-coil heaters.

Why we should not use heater in room?

Avoid the carbon monoxide poisoning by turning off the heater and unplugging it before leaving the room or going to the bed. Signs of too much carbon monoxide in the rooms include headache, dizziness, abdominal pain, discomfort, vomiting, nausea and weakness.

What is the safest space heater to leave unattended?

Oil filled radiator space heaters are some of the safest on the market. 1500W is all the juice an outlet will provide (Roughly 5,000 btus).

Is it cheaper to turn up the heat or use a space heater?

Using a space heater can be a good way to boost the temperature in a small, drafty room—and it could be less expensive than cranking up your central heating system. But a space heater is economical only if you use it judiciously.

Which room heater is best for health?

Oil Room Heaters

Oil room heaters, including the premium varieties by Orpat, are one of the safest options that can be chosen for good health. Oil serves as a medium to hold and distribute heat evenly across the room.

Is it OK to sit in front of a space heater?

Yes, you should not sit close to a heater, especially if it is an electric heater with a fan. This is because the direct airflow can lead to drying and sometimes burning of your skin, and you also face the risk of nodding on the heater, which could cause severe burns and other risks.

How long is it safe to run a space heater?

The duration for which you can leave a space heater running depends on the time of day and your specific needs. During the Day: It's safe to leave your heater on for 6-8 hours if you're in the room. If you're busy or moving between rooms, consider using a timer to automatically shut it off after a few hours.

Where is the best place to put a space heater in a room?

Put your space heater on the floor and leave it there

And definitely don't put it on top of your bed, with all those flammable fabrics and feathery fillings. If at all possible, keep it off the rug, too. Generally speaking, you should always place your space heater on the flattest, smoothest surface available.

Are electric heaters bad for your lungs?

Dry Air and Respiratory Issues

Space heaters can significantly dry out the air in a home, leading to various respiratory issues.

Are electric space heaters unhealthy?

A CPSC staff report found that portable heaters can also present a hyperthermia (overheating) hazard to consumers, particularly children, people with disabilities and senior citizens, who may be more susceptible because of their limited ability to act or react to the elevated ambient temperature.

What is the best type of heater for a bedroom?

Radiant heaters are best if you want to heat an area very quickly. On the other hand, if you want to warm an entire room in your home, a convection heater is the better choice. If you're looking for a heater that can stand up to everyday use and abuse, combination heaters are tough to beat.

What are the chances of a space heater catching fire?

Absolutely. The US Department of Energy records about 25,000 house fires every year that are linked to a space heater fire. Many result in trips to the emergency room, with more than 300 fatalities each year. Property damage from these fires can be devastating, requiring extensive professional fire damage restoration.

Are wall heaters safer than space heaters?

Wall-mounted heaters are hardwired for safety

Unlike portable options, wall-mounted units are hardwired into the wall, thus there is no cord to possibly trip over.

Are Honeywell space heaters safe?

With our Safety Matters® program, we go above the standard industry requirements and offer even more safety features, which includes features like tip-over switches, cool touch housing, additional overheat protection and more! Check out our Safety Matters® page to learn about the features in your heater.

What is heater sickness?

But before you fire it up, be prepared that feeling nice and toasty may also come with a stuffy nose, dry throat, cough or even a headache. These cold-like symptoms are referred to as "heater sickness." “This happens because dust, pollen and other allergens accumulate in your ducts during the warmer months,” Dr.

Can space heaters cause CO poisoning?

While electric space heaters do not produce carbon monoxide (CO), non-electric space heaters (propane gas, natural gas, kerosene, wood) can if incomplete combustion occurs. If these types of heaters are in use, it is recommended that a working CO detector be used to indicate the presence of high-level CO gas.

Can sleeping next to a heater make you sick?

Constantly breathing extremely warm, dry air that may contain fungi, mold and mildew from the vents can affect your skin, nose, throat and eyes. Breathing these air particulates and smelling the bacteria may cause sneezing, congestion headaches, coughing and drying out your eyes, nose and throat.

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