Nordic Bath: What It Is, How It Works, and Its Benefits

Imagine yourself in a large, steaming wooden tub outdoors, in the heart of your garden, with the crackling of a wood fire in the background. This is the experience of a Nordic bath. A concept that is gaining popularity in France but remains relatively unknown. What exactly is a Nordic bath? How does it work? What temperature should it be used at? And how long does it take to heat the water? We explain everything.

What Is a Nordic Bath?

The Nordic bath, also known as a Scandinavian bath, Finnish bath, or Swedish bath, is a large wooden tub filled with hot water, installed outdoors. Its principle is disarmingly simple: you immerse yourself to relax, alone or in a group, in water kept at a comfortable temperature by a wood-burning stove.

It’s not a hot tub. It’s not a pool. It’s something unique: authentic, sensory, and rooted in a tradition much older than you might think.

The origins of the Nordic bath trace back to Scandinavia, where people have heated wooden barrels for centuries to wash and warm up after long days spent in the cold.

How Does a Nordic Bath Work?

The operation of a Nordic bath is based on a proven, no-frills principle.

The Tub

The tub is usually round, with a diameter ranging from 150 to 240 cm, depending on the model. It can accommodate 2 to 10 people. Often, they feature built-in benches for comfortable seating and a lid to cover the tub between uses, preserving heat.

The Heating System

This is the heart of the Nordic bath: an aluminum stove, highly conductive, gradually heats the water. At Storvatt, for example, it is specifically designed for Nordic baths and delivers 40 kW of power, ensuring rapid and even heating.

Depending on the model, the stove can be:

• Internal (immersed in the tub): heats faster but offers slightly less space for bathers.
• External: frees up the entire interior volume but heats a bit more slowly.

Heating Time

This is the question everyone asks. With a large wood-burning stove (40 kW), it takes about 1.5 to 2 hours to heat the water from 5°C to 39°C, and up to 3 hours in winter conditions or with an external stove. This waiting time is part of the ritual: you light the fire, prepare drinks, and enjoy the moment.

What Is the Ideal Temperature for a Nordic Bath?

The ideal temperature for a Nordic bath is between 37°C and 40°C. This is warm enough to relax muscles and deeply soothe the body without risking overheating for a healthy adult.

Here are some practical guidelines:

Once the desired temperature is reached, the water stays warm for several hours if the lid is closed.

Nordic Bath vs. Hot Tub: Different Sensations

The two are often confused, but they offer very different experiences.

The Nordic bath is about tranquility, wood, aromas, and the crackling of the fire. No bubbles, no jets, no motor hum. It’s a silent immersion in hot water, outdoors, connected to the nature around you.

The hot tub, on the other hand, relies on technology: massage jets, hydromassage, and built-in electronics. It’s more dynamic but also more mechanical, noisier, and usually made from synthetic materials—except for Storvatt’s wooden hot tubs.

Can You Use a Nordic Bath in Winter?

Yes, and it’s often the most appreciated season. Immersed in 39°C water while the outdoor air hovers around freezing is one of the most intense experiences a Nordic bath can offer.

The Red Cedar used by Storvatt perfectly resists frost, weather, and temperature variations, season after season. The wooden structure is even guaranteed for life against freezing (excluding machinery). A Nordic bath should be usable year-round, without climate constraints.

Water Treatment: How Does It Work?

Water maintenance depends on usage frequency and the chosen model.

For Storvatt’s wood-burning stove models, the bath comes with a cartridge filtration system. Weekly maintenance is sufficient: clean the cartridge, add bromine tablets (included in the HTH starter pack provided at delivery), and check the pH. For private use, a complete water change is recommended every 3 months.

For electric and hybrid models, the automatic filtration system keeps the water crystal clear continuously, requiring even less intervention.

If you plan to be away for an extended period, the bath can remain empty without issue, which is very practical for a second home.

Storvatt’s Range: Which Nordic Bath to Choose?

Storvatt offers several Nordic bath models, all made from Red Cedar in the French Alps, available in diameters from 150 to 240 cm (for 2 to 10 people).

Wood-Burning Nordic Bath

This is the most traditional and authentic model. This wood-heated Nordic bath is equipped with a 40 kW immersed aluminum stove. Zero electricity, zero motor, zero noise. It heats the water in 1.5 to 2 hours and can be installed anywhere, even without an electrical connection. This is the Nordic experience in its purest form. Starting at €7,250.

Hybrid Nordic Bath (Best Seller)

The Hybrid Nordic Bath combines the charm of wood heating with the convenience of electricity. A 3 kW Balboa electric heater automatically maintains the temperature between sessions, while the wood stove takes over during use for rapid heating. An integrated filtration system ensures crystal-clear water over time. This is the ideal model for regular use, without management constraints. Starting at €9,550.

Electric Nordic Bath

The Electric Nordic Bath is fully automated: the temperature is set via a Balboa keypad, the filtration runs continuously, and the water is always ready. Ideal for those who want a bath available at any time, without handling wood. Delivery is announced in 6 weeks, compared to 8 weeks for other models. Price available upon request, depending on configuration.

Cold Bath

Designed to be paired with a sauna or hot bath, the Cold Bath allows you to practice the hot/cold cycle at home, in the purest Nordic tradition. It is also made of Red Cedar, compact, and can accommodate 1 to 2 people for immersion at 5–15°C. Alternating between sauna or hot bath and cold bath is one of the most documented practices for stimulating circulation and recovery.

All Storvatt baths are delivered fully assembled, with a 5-year warranty on the wooden structure and a lifetime warranty against freezing (excluding machinery).

Benefits of the Nordic Bath

For Circulation and Muscles

Immersing yourself in 38–40°C water causes vasodilation: blood vessels expand, circulation improves, and muscles relax. This is particularly beneficial after physical exertion to reduce soreness and speed up recovery. The heat also releases accumulated muscle tension, often in the back, shoulders, and legs.

For the Mind

20 to 30 minutes in hot water, outdoors, away from screens—the effect on stress is almost immediate. Immersion in hot water promotes the release of endorphins and serotonin. Combined with the natural setting and silence (real silence, not spa music), this experience acts as true mental decompression.

Hot/Cold Practice

The Nordic tradition encourages alternating between hot baths and cold immersion: cold bath, cold shower, or simply the outdoor air in winter. This thermal contrast causes vasoconstriction, which stimulates the circulatory system, strengthens immune defenses, and improves muscle recovery. This is why Storvatt also offers a Cold Bath in its range.

A few precautions to keep in mind: despite these benefits, Nordic baths above 34°C are not recommended for pregnant women and young children. Individuals with cardiovascular diseases, uncontrolled hypertension, or severe respiratory problems should consult their doctor before use.

Frequently Asked Questions

Does a Nordic bath have bubbles?
No. By definition, a Nordic bath does not have jets or bubbles. However, some models allow for the addition of a hydromassage option.

Can you keep the water hot permanently?
Yes, with an electric or hybrid model. With a wood-burning stove model, you heat it on demand, which remains more economical.

Do you need a building permit?
Generally, no. A Nordic bath placed on a terrace or on the ground does not require a permit. However, check with your local town hall if you have any doubts related to your property’s configuration.

What type of surface should you install a Nordic bath on?
A flat, stable, and solid surface: concrete slab, wooden deck, or compacted gravel. You must consider the total weight (tub + water + bathers), which can reach several tons depending on the diameter.