Generally, tests show that heat logs will burn for around 2 - 3 hours. Now, that’s not a very specific answer to the question ‘How long do fire logs last?’ but there are so many factors that will affect burn time, as well as the composition of the log.
It’s All About The Air
The most important factor is the airflow. You need to have enough air to get the fire started but the more airflow, the faster the fire will burn. This also includes the flow of air throughout the fire, as well as the flow across the fire and up the vents. If you pack your firewood quite loosely then the fire will burn quite quickly. However, if you pack the fire tightly you run the risk of not having enough airflow between the wood and kindling to get a good enough fire started.
When you are using Lekto Heat Logs, remember the compressed wood will expand as it burns. This is why we always recommend splitting the heat logs into smaller parts as you build the fire. You don’t want the logs to expand so much that they block the flow of air completely, so always start smaller and add more sections of wood as the fire builds - it’s much easier than trying to remove wood once the fire has started.
If you want to reduce the amount of time you spend tending the fire, add a night briquette as well! These slow-burning wood blocks don’t produce as much heat as a fire log, but they do help to keep the embers burning, making it easier to stoke the fire or add more wood if you want to stay warm and cosy on the sofa of an evening.
Get All Topsy Turvey
If you read the many articles available on the internet you’re bound to come across some recommendations to build your fire upside down. Rather than starting with kindling and small logs, using those to light the larger logs on top, some writers believe that building a fire with the biggest bit of firewood at the bottom will burn longer.
We don’t have any independent evidence either way for this. However, we do know that each fire, stove and burner is unique, with its own microenvironment of airflow and deposit build-up, the results will vary. Our best advice is to try a few of the suggested solutions and see which one work’s best for you. Whatever the results, do let us know on our social media feeds!