Firepits: What Fuel To Use

It’s a question that we see constantly come up, what wood should I be burning in my fire pit? Can I use charcoal in my Firepit? What about liquid fuels? Below we will go into detail on the different types of fuel to use on a firepit. 

Which Logs for my Fire Pit?

When picking logs for your Fire Pit there are two key requirements for your wood, the first is that you want your logs to be dry and the best way to accomplish this is to get Kiln Dried Logs. In the UK they are also required to have the “Ready To Burn” badge on them, this is because of new laws that have recently come into effect, meaning that wet wood cannot legally be sold. But this isn’t bad news, as dry wood burns hotter, produces less smoke, and is easier to light, which overall provides a much better user experience.

The second key requirement is that Hardwood Logs are much better to burn than softwood. Hardwood burns longer as it is denser, this results in Hardwood logs burning for several hours. Hardwood also burns hotter than softwood, meaning you don’t need to use as much wood for the same amount of heat that a softwood fire would provide. Softwood also has higher amounts of resin, which can result in a build-up of tar in your chimenea. Softwood also produces more smoke than Hardwood on average, which is unpleasant for those around the fire and worse for the environment.

Now that we’ve discussed those two key points, let's talk about the different varieties of Hardwood available:

Birch: Birch is easier to light than a lot of other hardwoods and because of this it reaches higher heats quicker, meaning those around a Birch fire don’t have to wait as long for the heat levels to rise. It also produces a cosy bright flame, which is ideal for those darker nights around your Fire Pit.

Alder: Alder is also easier to light than a lot of other Hardwoods, which also means it reaches higher heats quicker. But Alder takes this a step further and burns even hotter than a lot of other hardwoods. Producing a hot and toasty heat to keep you and your guests warm, while also producing a bright and vibrant flame.

Ash: Ash is a denser Hardwood and because of that is slightly harder to light, though when it does start burning it produces a strong and consistent heat that’ll last longer then a lot of other Hardwoods. It’s also one of the most popular woods on the market as it is seen as a reliable wood to burn year after year.

Oak: Oak is a very dense wood and because of this it is even harder to light than most other hardwoods. The conditions for burning oak also have to be right for the log to burn well and oak requires a lot of air to burn well. So if you aren’t somewhere with a lot of wind, then more often than not an Oak log will smolder and blacken, instead of producing a good-looking, bright flame. Although it will still produce a strong, consistent heat when it gets going. Which can take a while under the wrong conditions.

Hornbeam: Hornbeam provides a similar high heat burn to oak, with the same consistent and long burn time. But Hornbeam is a lot easier to light than Oak and easier to get it properly burning, without the requirements that oak needs. While it is still harder to light than Birch or Alder for example. It will also produce a cosy warm flame.

Burning Smokeless Coals & Charcoals in a Fire Pit

While you can burn smokeless coal and "Charcoal" in a Fire Pit it’s important to learn the issues this can bring up, for a start both will produce a lot more waste than burning wood. They also burn hotter than Hardwood on average and this can cause damage to fire pits.

Smokeless coal burns at a very high temperature and this can very easily cause damage to even a high-quality fire pit, with thick steel. We would not advise burning coal in a fire pit, as this will shorten the fire pit’s lifetime usage.

Burning charcoal is another matter and doesn’t produce as much heat as burning coal, though it does still produce a lot of heat and the deadly carbon monoxide. This can be a problem for cheaper fire pits, where the metal is thinner and does not receive the same level of heat treatment. More dangerously It will also produce a lot of carbon monoxide, so if this is done in confined conditions then this can cause serious health issues or even death.

Burning Liquid Fuels and Accelerants

Only use Liquid fuels or accelerants on a fire pit that is specifically designed to burn that type of fuel. Otherwise not only can they damage your fire pit because they burn at such a hot temperature but they also pose a very real risk to health if something goes wrong. Even if it doesn’t, they produce a lot of contaminants that are harmful to humans and animals to breathe in or ingest. So we’d advise keeping them far away from your fire pits, unless specifically detailed otherwise with the fire pit.

That concludes our guide on what fuel to use with a firepit, hopefully your firepit will now be burning brightly away. If you would like to learn more about burning solid fuels or any gardening needs, then check out our wide range of high quality articles!