How Much Heat Does A Candle Give Off?

Updated on December 9, 2022

Table of Contents

How Much Heat Does A Candle Give Off?

Heat capacity refers to the amount of heat produced per unit of mass. Since candles are made of wax, they have very little heating capacity. A single candle gives out roughly 75-85 BTUs of heat. This is far lower than most heating devices, which can easily exceed 1000BTU's. While candles do provide some heat, they don't compare well to heating devices.

Efficiency refers to the ratio between the total energy released and the input energy required to release it. As mentioned above, candles have an efficiency rate of 90%, meaning that 90% of the energy they produce is converted into heat. This means that only 10% of the energy is actually being emitted as light.

Candles are efficient because they convert almost all of the energy they produce into heat. Space heaters, however, are inefficient because they emit only 10% of the power they consume.

To Heat A Room, How Many Candles Are Required?

This is a great question for anyone who wants to heat a room without spending a lot of money. You'll find that there isn't really any right answer here. It depends on the type of candle you use, the size of the room, and how long you plan on keeping the candles lit.

To Heat A Room, How Many Candles Are Required?

For instance, if you were heating a small bedroom, you might only need 20 candles. However, if you wanted to heat a large living room, you might need 50 candles.

You should also consider the cost of replacing candles. Some types burn out quickly, while others last longer. If you're planning on lighting multiple candles at once, you may want to invest in a larger wick.

Replacing 20 candles each hour sounds like a bit of a waste. Consider that this number is for just one bedroom. If you had a family of four, you'd need to replace 40 candles every hour.

That said, you shouldn't light candles for hours on end. Lighting candles for extended periods of heating time can cause damage to furniture and floors. Also, burning candles releases carbon monoxide, which can be harmful to children and pets.

So, how do you decide how many candles to use? Well, it depends on the size of your room, the type of candle you're using, and how long you intend to keep the candles lit.

Are Candles Better Than Space Heaters?

Candles are great for providing light, but if you want a cheap way to warm up a room, you might want to consider using a heater instead of candles. A heater converts 90% of its input energy into heat, whereas a candle only converts 10%.

Are Candles Better Than Space Heaters?

Space heaters are very efficient and convert 90% of the input energy into heat. As a consequence, they are less expensive than candles. Plus, you won't have to worry about replacing them as frequently.

However, candles are not much more affordable than space heaters. In general, the retail prices of a candle range from about $1.99 for a votive to about $35 for a larger candle. Considering you need to place twenty at a time and replace every four hours, you'd need at least 120 per day. And you'd have to be careful of the fire hazard.

Heaters can last for years, so you only need to look at the cost and benefits with respect to the number of rooms to decide which one is a better choice.

Can You Safely Use Candles To Heat A Room?

Candle heaters are great for those who live in cold climates because they provide a warm feeling without the hassle of running a heater. People who consider replacing their heat with candles usually wonder if it is safe. The answer is yes, but only if you do it right.

First, you must realize that for the heat, a single candle gives off enough heat to keep a small room warm for approximately two hours. So, if you have 20 candles in a room, you'll need to burn them for four hours to achieve the same effect as a traditional heater.

Second, you should never leave candles unattended. If you do, you run the risk of setting yourself on fire. Also, candles can easily start fires.

Third, you should never light multiple candles at once. Doing so makes the situation worse. Instead, light just one candle at a time.

Fourth, you should never use a candle holder that holds more than one candle. This is because the heat produced by the candles can cause the holders to melt.

Fifth, you should never use candles to heat a large room. Because the heat generated by the candles is concentrated in a small area, the temperature inside the room may rise above 100 degrees Fahrenheit. This can lead to burns and even death.

Sixth, you should never try to heat a room with candles alone. You need to add another source of heat, such as a space heater or fireplace. Otherwise, you're risking disaster.

Finally, you should never use any kind of flammable material near a candle flame. This includes paper, cloth, wood, plastic, and anything else that might catch fire.

Suitable Candles For Warmth

Candle heaters are great for warming rooms during cold weather. However, if you leave a candle burning unattended, it can quickly become a fire hazard.

Suitable Candles For Warmth

You should never leave candles unattended, especially ones made of wax. There are several types of candles available. Each type of candle gives off a certain level of heat.

Stonebriar Unscented Pillar Candles

Candles are great for adding warmth and ambiance to any space. But if you've ever used regular simple candles, you'll know that they melt down quickly and require frequent replacement. Fortunately, there are alternatives out there that are safe, affordable, and long-lasting.

One of those options is Stonebriar pillar candles. These unscented pillar candles burn for 35 hours, making them ideal for warming up a cold winter night.

They're made of 100% cotton, so you won't have to worry about inhaling toxic fumes. Plus, since they're unscented, you won't have to smell anything unpleasant either.

CandleNscent Tealight Candles

CandleNScent is known for making quality candles at affordable prices. The tea candles are made from natural materials like soy wax and beeswax. They're available in different sizes and scented options.

CandleNscent Tealight Candles

These candles are ideal for small spaces since they only last 3-4 hours. However, they are not recommended for larger spaces since they tend to spread easily.

They are also smokeless, which means there won't be any unpleasant smells lingering after burning. We would definitely recommend considering this option if you are looking to buy a high-quality, cost-efficient candle.

UCO Emergency Candles

It's a great option for kids who need something fun to do during the summer months. It's made out of paraffin wax, which melts at a low temperature. As a result, there's less risk of burning down the house. Plus, it burns for 7-9 hours, which is longer than most plain candles.

These emergency candles come in a variety of sizes, including 3.5 inches tall. You won't find any flicker or flickering flames here. Instead, you'll only find a steady glow.

You can buy these emergency candles online, but you may prefer to buy them locally. After all, you can ask questions directly to the seller and avoid getting scammed. You can also compare prices between stores and find the best deal.


Candles are in trend right now. People are using them as decorations, gifts, and even replacements for space heaters. However, there are still questions about heating power regarding whether or not they can replace space heaters. In comparison with space heaters, candles aren't completely safe.

You may find yourself wondering whether or not candles are more efficient than space heaters. Well, the answer depends on several factors. First, you'll want to consider the price of the two options. Space heaters tend to be cheaper than candles, but candles are usually less expensive than gas or electricity.

Another thing to think about is the heating system’s energy consumption. Some space heaters are very inefficient, meaning that they waste energy. On the other hand, candles are generally more efficient than space heat.

Regular space heaters are safer than usual candles. You can easily control the temperature of a heater. On the other hand, candles are dangerous. You cannot control the temperature of a candle. Also, candles burn out quickly. So, if you plan to use candles instead of space heaters, you must consider the following points:

Smell is one of the human senses which can flow through the whole body. I am the Founder of where we talk all about scented candles. Known as Candace the Candle Girl, I know pretty much all there is to know about scented candles. I make and sell them on Etsy and Ebay - so be sure to ask if you have any burning questions :) (pun intended ;) )

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One comment on “How Much Heat Does A Candle Give Off?”

  1. I have to disagree. Both heaters and candles convert 99.9% of their energy into heat. A tiny bit might escape out windows as light but most of the light will be absorbed into the walls and heat them. A heater with a fan will loose a tiny bit of energy outside as sound.
    >>A heater converts 90% of its input energy into heat, whereas a candle only converts 10%

  2. I have to disagree. Both heaters and candles convert 99.9% of their energy into heat. A tiny bit might escape out windows as light but most of the light will be absorbed into the walls and heat them. A heater with a fan will loose a tiny bit of energy outside as sound.
    >>A heater converts 90% of its input energy into heat, whereas a candle only converts 10%