How to heat a wood-burning sauna – a practical guide

🕓 Viimati uuendatud: 4. Sep 2026

Proper heating is the foundation of a good sauna experience. A wood-burning sauna stove requires a slightly different approach during its first heating than during regular use. In this guide, we explain how to heat a new sauna stove for the first time and how to heat your sauna properly so that the sauna room warms up evenly and the steam feels soft and pleasant.

Why is the first heating of a sauna stove important?

The first heating is an important step before using a new sauna stove regularly. During this process, the metal parts of the stove are heated to a high temperature for the first time.

The first heating helps to:

• remove possible manufacturing and transport residues
• cure and stabilise the stove’s surface coating
• reduce odours that may occur when the stove is first heated

We recommend heating the stove gradually for the first time and ventilating the area thoroughly afterwards.

How to heat a sauna stove for the first time

Whenever possible, we recommend carrying out the first heating outdoors or in a well-ventilated area. When a new stove is heated for the first time, its metal parts and surface coatings may produce some odour. Heating the stove outdoors before installation helps reduce these odours and makes the first sauna sessions more pleasant.

The first heating should be done gradually with a moderate fire. This allows the stove materials to heat up evenly and helps remove possible manufacturing residues.

We recommend following these steps:

1. Ensure good ventilation

Make sure there is sufficient ventilation. If the stove has already been installed, keep a window or door slightly open if necessary.

2. Use a small amount of dry firewood

There is no need to heat the stove at maximum intensity during the first heating. Start with a moderate amount of dry firewood.

3. Heat the stove gradually

Allow the stove to warm up gradually. An excessively strong fire at the beginning is unnecessary.

4. Ventilate thoroughly afterwards

Once the first heating is complete, ventilate the area thoroughly to remove any remaining odours.

Important! The first heating should be carried out without sauna stones.

After the first heating, the sauna stove is ready for normal use.

How to heat a wood-burning sauna properly

The right heating technique helps the sauna warm up evenly and creates soft, pleasant steam. When heating a wood-burning sauna, pay attention to the quality and amount of firewood as well as the heating time.

Use dry firewood

Dry firewood provides the best results. Wet wood burns poorly, produces more smoke and generates less heat. With dry firewood, the sauna stove heats up more efficiently and reaches the desired temperature faster.

Use the right amount of firewood

There is no need to fill the firebox with a large amount of wood at once. It is better to add firewood gradually so that the stove heats evenly. Too much wood at once can create an excessively strong fire and lead to uneven heating.

Allow enough time for heating

Heating a sauna usually takes around 45–90 minutes, depending on the size of the sauna and the output of the stove. It is also important to allow the sauna stones to heat thoroughly, as properly heated stones are essential for creating good sauna steam.

How long does it take to heat a sauna?

The time required to heat a sauna depends mainly on the size of the sauna room, the output of the stove, the insulation and the firewood being used.

With dry firewood and a correctly sized wood-burning sauna stove, the sauna can reach a comfortable temperature relatively quickly.

Small sauna – approximately 7-12 m³

A smaller sauna usually takes around 30-45 minutes to heat. Make sure the sauna stones also have enough time to heat thoroughly so that the steam is pleasant and even.

Medium-sized sauna – approximately 8-18 m³

A medium-sized sauna usually takes around 45-60 minutes to heat. This gives both the sauna room and the stones enough time to reach a suitable temperature.

Large sauna – approximately 16-25 m³ or more

A larger sauna may take around 60-90 minutes to heat, depending on the output of the stove, the insulation and other characteristics of the sauna room.

Common mistakes when heating a sauna

Heating a wood-burning sauna is not difficult, but a few common mistakes can affect both heating efficiency and the quality of the steam.

Using wet firewood

Wet firewood burns poorly and produces less heat. It also creates more smoke and soot. Dry firewood ignites more easily, burns more efficiently and provides more consistent heat.

Adding too much firewood at once

Putting too much firewood into the stove at once can create an excessively strong fire. This does not necessarily heat the sauna faster and may result in uneven heating. It is better to add firewood gradually.

Using too few sauna stones

Sauna stones play an important role in the quality of the steam. If there are too few stones or they are not hot enough, the steam may feel dry and harsh. A sufficient amount of properly heated sauna stones helps create softer and more pleasant steam.

A properly heated sauna stove warms the sauna room evenly and helps create soft, enjoyable steam. Skamet wood-burning sauna stoves are designed to make heating straightforward and provide a comfortable sauna experience.

If you are looking for the right solution for your sauna, explore Skamet wood-burning sauna stoves, available for sauna rooms of different sizes.