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The Advantages of Using Kiln-Dried Wood for Your Wood-Burning Hot Tub

The Advantages of Using Kiln-Dried Wood for Your Wood-Burning Hot Tub

Rhodri Evans |


Imagine sinking into a steaming hot tub, the air filled with the rich aroma of burning wood. The gentle crackle of firewood, the flicker of flames, and the warmth enveloping your body – there's something enchantingly rustic about a wood-burning hot tub, isn't there? It's a haven of relaxation; a retreat from the hustle and bustle of everyday life. But the secret to a perfect wood-burning hot tub experience? It's all in the type of wood you use.

One question we often encounter is: What is the best type of wood for a wood-burning hot tub? The answer is simple – kiln-dried wood. In the following sections, we'll delve into what kiln-dried wood is, why it's the best choice for your hot tub, and how it contributes to a delightful, relaxing, and eco-friendly hot tub experience.

What is Kiln-Dried Wood?

Simply put, kiln-dried wood is wood that has been dried in a kiln (a type of oven), to rapidly reduce its moisture content. During this process, the wood is exposed to high heat for a specific period, effectively evaporating much of the moisture within. This differs from air-dried wood, which relies on natural weather conditions and can take months, sometimes even years, to achieve a similar moisture level.

But why does moisture content matter? Well, moisture content plays a pivotal role in how well the wood burns. Too much moisture, and the wood struggles to ignite and burn efficiently. Kiln-dried wood typically has a moisture content of 15-20%, making it an ideal choice for a wood-burning hot tub.

Improved Ignition and Burning Efficiency

We've all been there – struggling to get the fire going while excitement (and let's face it, impatience) mounts. Kiln-dried wood takes the hassle out of this experience. Thanks to its low moisture content, it ignites quickly and burns more efficiently than its air-dried counterpart. This means less time spent getting the fire started and more time soaking in your hot tub.

Moreover, efficient burning is not just about quick ignition. It also means higher heat output and longer burning times, both of which are crucial for a satisfying hot tub experience.

Reduced Smoke and Emissions

Ever had your relaxing hot tub session disrupted by billowing smoke or a crackling fire that's more spark than flame? Kiln-dried wood can help you avoid these inconveniences. Because it's drier, it burns more cleanly, producing less smoke and fewer emissions compared to air-dried wood.

That's not just good news for you and your hot tub experience, but for the environment too. By choosing kiln-dried wood, you're opting for a more sustainable and eco-friendly way to enjoy your hot tub, supporting sustainable wood usage and contributing to a healthier planet.

Enhanced Heat Output

One of the primary benefits of using kiln-dried wood in a wood-burning hot tub is the enhanced heat output. Because the wood is drier, it burns hotter, helping your tub heat up quicker and maintain an optimal temperature for longer. Who wouldn't want to dive into a hot tub that's ready faster and stays warm longer?

The role of moisture content in heat output cannot be overstated. The lower the moisture, the higher the heat output – simple as that. And as we've already mentioned, kiln-dried wood typically boasts a lower moisture content than air-dried wood.

Longer Burning Time

Apart from a higher heat output, kiln-dried wood also offers longer burning time. This means you can enjoy your hot tub for extended periods without needing to add more wood frequently.

How does this work? The moisture in wood can slow down its burning process. Since kiln-dried wood has less moisture, it can maintain a steady flame for a longer duration, thus prolonging your ultimate relaxation experience.

Reduced Maintenance and Cleaning

If you've ever used a wood-burning hot tub, you'll know that it requires some maintenance and cleaning, especially when it comes to dealing with ash and residue. With kiln-dried wood, this task becomes considerably easier.

Kiln-dried wood produces less ash and residue, meaning less time spent cleaning your hot tub and firebox. That said, it's still important to regularly clean your hot tub to maintain its performance and longevity.

Durability and Resistance to Decay

One of the key advantages of kiln-dried wood is its durability and resistance to decay. The kiln-drying process not only removes moisture but also kills insects, fungi, and other organisms that can lead to decay and rot. This makes it an ideal choice for a wood-burning hot tub, where the wood is likely to be exposed to moisture and outdoor elements.

Considerations When Using Kiln-Dried Wood for a Wood-Burning Hot Tub

So, you're convinced about the benefits of kiln-dried wood and are eager to try it out in your hot tub. Great! But before you do, there are a few considerations to keep in mind.

First, remember that not all kiln-dried woods are created equal. Different species of wood have different burning properties, and it's crucial to choose the right type for your hot tub. For example, hardwoods like ash are generally denser and burn longer than softwoods.

Also, make sure your source of kiln-dried wood is reliable and sustainable. It's always a good practice to ask where the wood is sourced from and ensure it's responsibly harvested.

Lastly, store your kiln-dried wood properly to maintain its quality. Keep it in a dry place, away from direct contact with the ground, and protect it from rain and snow. Doing so will help you maximise the benefits of your kiln-dried wood and enhance your hot tub experience.


From quick ignition and efficient burning to reduced smoke and longer burn times, the advantages of using kiln-dried wood in a wood-burning hot tub are plentiful. Not only does it elevate your hot tub experience, but it also contributes to a sustainable and eco-friendly lifestyle.

Choosing the right type of wood for your hot tub matters, and we hope this guide has shown why kiln-dried wood is a superior choice. So, the next time you're prepping your wood-burning hot tub, remember to reach for kiln-dried wood and look forward to an unmatched hot tub experience.

Happy soaking!