Does Candles Produce Carbon Monoxide

Candles are a popular source of light and ambiance, but did you know that they could also be hazardous to your health? Burning candles have the potential to release carbon monoxide into the air, which can have serious implications for your health. In this article, we’ll explore whether or not burning candles actually produce carbon monoxide and why it’s so important to make sure that you’re burning them safely.

When we think about living a life of freedom, we often don’t consider the potential health risks associated with everyday activities like lighting candles. We might take for granted that something as simple as a candle is completely safe and non-toxic, but this isn’t necessarily true. Burning candles can release dangerous pollutants into the air, including carbon monoxide.

So what exactly is carbon monoxide and how can it negatively impact our health if we’re exposed to it while burning candles? In this article, we’ll discuss this issue in detail so that you can make an informed decision about burning candles in your home.

Does Candles Produce Carbon Monoxide

What Is Carbon Monoxide?

Carbon Monoxide (CO) is an odorless and colorless gas that can be deadly if exposed to in high concentrations. It’s a byproduct of burning fuel, like gas, wood, or oil, and it’s the leading cause of accidental poisoning deaths in the US. CO is often found indoors as a result of air pollution from improperly vented appliances and heating systems. Inhaling even small amounts of this gas can have serious health effects.

Some common exposure symptoms include dizziness, headache, nausea/vomiting, weakness, confusion, chest pain and difficulty breathing. Long-term exposure to CO can lead to permanent damage to the heart and brain. It’s important to take preventative measures if you’re at risk for potential CO exposure in your home or workplace. This includes installing carbon monoxide detectors in every level of your house and seeking professional help if you believe there may be a problem with your indoor air quality. Adequate ventilation is also key for reducing your risk of breathing in dangerous levels of this gas.

The Burning Process Of Candles

The burning process of candles is an interesting phenomenon that involves wax-melting, heat-releasing, flame-producing and smoke-emitting. When a candle is lit, the wax melts to form a pool of liquid wax. Heat from the flame evaporates some of the liquid wax and causes it to rise up the wick. At the same time, the heat from the flame causes hydrocarbon molecules in the liquid wax to break apart into smaller molecules. The smaller molecules are what create the flame that we see when we look at a burning candle. As these molecules burn, they produce carbon dioxide and carbon monoxide as byproducts of combustion. Carbon monoxide is an odorless, colorless gas that can be hazardous to humans if inhaled in large amounts. Therefore, it’s important to use caution when burning candles in enclosed areas or for extended periods of time.

Composition Of Candle Wax

Candles are composed of different types of waxes, which vary in their chemical composition and burning properties. Common candle wax ingredients include beeswax, paraffin, soy wax, and vegetable waxes. Paraffin candles are the most popular type of candle due to their affordability and reliability. The primary components of a paraffin candle are paraffin wax and stearic acid. Paraffin is a petroleum-based material that has been refined to remove impurities and provide a consistent burning experience. Stearic acid helps the candle burn at an even temperature and prevents soot formation.

Other materials used in the composition of candle wax include palm oil, other vegetable oils, mineral oils, dye pigments, and essential oils for scent. Vegetable oils have become increasingly popular as they’re renewable resources with lower environmental impact than petroleum-based products like paraffin. All these materials come together to create a candle with its own unique scent, shape, color and burning characteristics. Candle makers must carefully consider each ingredient to ensure their candles provide a safe and enjoyable experience for customers.

How Much Carbon Monoxide Is Produced?

Now that we have discussed the composition of candle wax, it’s time to look at how much carbon monoxide is produced. Carbon monoxide production is an important consideration when burning candles. Measuring carbon monoxide levels can help determine if there are any potential health risks associated with using candles in home settings.

When burning a candle, its smoke emissions will be released into the atmosphere and these can contain trace amounts of carbon monoxide. The amount of carbon monoxide present in the air depends on several factors, including the type of candle wax used, its size, as well as ventilation. If a candle is burned in an enclosed space with little ventilation, then levels of carbon monoxide may increase significantly.

It is generally accepted that regular use of candles does not pose any significant health risk due to their low levels of carbon monoxide emissions. However, it is still important to be aware of what type of candle wax you are using and ensure proper ventilation when burning them indoors. By doing so, you can minimize any potential risks associated with exposure to candle smoke emissions.

Potential Health Risks

Candles can produce carbon monoxide, a harmful and potentially deadly gas. As such, there are definite risks related to burning candles that must be taken into consideration. Inhaling candle emissions with large concentrations of carbon monoxide can lead to symptoms of carbon monoxide poisoning. These include headaches, nausea, fatigue, dizziness, confusion and difficulty breathing. Long-term health effects of exposure to carbon monoxide can include damage to the heart, brain and other organs.

It is therefore important that when burning candles in an enclosed space such as a room or garage, caution should be taken to ensure adequate ventilation is provided. This will reduce the risk of building up dangerous levels of carbon monoxide in the air. Always follow the instructions provided on candle packaging in order to ensure correct use and reduce potential risks associated with candle emissions.


In conclusion, carbon monoxide is a very dangerous gas that can have serious health effects. Candles do produce some carbon monoxide when they burn, but the amount is usually minimal and not enough to be considered a health risk. However, it’s still important to take precautions such as opening windows and avoiding burning candles for long periods of time in unventilated spaces.

It’s also important to be aware of the composition of candle wax since different types of waxes can have different levels of combustion byproducts. The best way to stay safe while burning candles is to monitor your surroundings and air quality, and if you notice any signs of carbon monoxide poisoning such as headaches or dizziness, seek medical attention right away.

At the end of the day, burning candles in moderation is generally safe; just make sure you keep an eye on your environment and react accordingly if you experience any symptoms related to carbon monoxide exposure.