Nordic Minimalism
Nordic Quattro follows the principles of Nordic design: clean lines, natural materials and a calm, balanced look. Instead of standing out with bulky plastic shapes or visible technical parts, it is made to feel like a natural part of the outdoor environment.
Whether placed next to a terrace, lake, forest, garden or rental cabin, the tub brings a warm and refined wellness feeling without disturbing the overall look of the space. It is a hot tub made for customers who care about both comfort and aesthetics.
Redefining Modern Outdoor Wellness.
Nordic Quattro is a compact and ultra-efficient square hot tub designed for people who want a premium spa experience without needing a large outdoor space. Its smart four-person layout makes it ideal for private homes, terraces, cabins, holiday rentals and boutique hospitality locations.
The design focuses on comfort, fast readiness and a clean visual appearance. Every detail is made to feel simple, elegant and practical — giving you a hot tub that looks beautiful in its surroundings and is easy to enjoy whenever you want to relax
Premium Materials
Nordic Quattro combines a natural 18mm thermowood exterior with a strong 5mm reinforced fiberglass interior. This gives the tub a warm wooden look from the outside, while the inside remains smooth, comfortable and easy to maintain.
The base is made from 9mm waterproof plywood, adding strength and protection from below. Together, these materials create a hot tub that feels premium, looks timeless and is built for long-term outdoor use.
Rapid Readiness
Less waiting, more relaxing.
One of the biggest advantages of Nordic Quattro is how quickly it can be ready for use. Thanks to its efficient 800L water volume and smart heating design, the tub can heat from 15°C to 35°C in under one hour.
This makes it much easier to use spontaneously. Instead of planning your evening hours in advance, you can light the fire, let the system do its work and enjoy warm, relaxing water faster than with many larger traditional hot tubs.
Key Features & Specs
Compact Design
With a 170 × 145 cm footprint, Nordic Quattro offers a full hot tub experience while fitting easily into smaller terraces, gardens and outdoor wellness areas.
4-Person Capacity
Designed for up to four people, the Nordic Quattro is ideal for couples, families and small groups looking for a comfortable private spa experience.
Fast Heating
Thanks to its efficient 800L water volume, Nordic Quattro can heat from 15°C to 35°C in under one hour with wood-fired heating.
Hidden Engine
The technical system is fully integrated and hidden inside the design, keeping the exterior clean, minimal and visually appealing.
Hydromassage Jets
Equipped with 16 hydromassage jets, Nordic Quattro offers a relaxing spa-like massage experience in your own outdoor space.
Ergonomic Headrests
Four ergonomic headrests provide extra comfort, allowing every user to sit back, relax and enjoy the warm water properly.
Heat Pump Ready
Nordic Quattro can be combined with a 7kW heat pump for efficient heating, water cooling capability and lower energy use.
Premium Materials
Built with an 18mm thermowood exterior, 5mm reinforced fiberglass interior and 9mm waterproof plywood base for durability and long-term outdoor use.
Built to Last
No Exceptions in Quality
At every step of the production process, we uphold the highest standards of quality. From the selection of materials to the meticulous craftsmanship, our hot tubs are built to exceed expectations.
18mm Thermowood Exterior
The exterior is finished with 18mm thermowood, giving Nordic Quattro a warm and natural Nordic appearance. This makes the tub feel less like a technical product and more like a permanent part of the outdoor environment.
Reinforced Fiberglass Interior
Inside, Nordic Quattro features a 5mm reinforced fiberglass interior designed for comfort, durability and easy everyday use. The smooth fiberglass surface gives the bathing area a clean, premium feel while making the tub practical to maintain.
Waterproof Plywood Base
The base is built from 9mm waterproof plywood, adding strength and protection from underneath. This supports the structure of the tub and helps make Nordic Quattro suitable for long-term outdoor placement.
Compact but Spacious
With a 170 × 145 cm footprint, Nordic Quattro is easy to place even where space is limited. Despite its compact size, it is designed for up to four people, making it a practical choice for private homes, guest houses, glamping sites and short-term rentals.
Drawings Dimensions
Nordic Quattro is designed to offer a spacious and comfortable four-person hot tub experience in a compact, easy-to-place format. With an external size of 170 × 145 cm, it fits naturally into gardens, terraces, cabins and outdoor wellness areas without requiring excessive space.
The 800L water volume gives the tub an excellent balance between comfort and efficiency — enough room for proper relaxation, while still allowing faster heat-up times and easier everyday use. With a 0.98 m interior depth and a total weight of 150 kg, Nordic Quattro is practical to install, comfortable to use and perfectly suited for both private homes and hospitality settings.
External Size
Weight
Deep Interior
Capacity
Q&A
What is the difference between an internal stove, an external stove, and the integrated stove offered by TheNordicSauna?
An internal stove is the simplest solution, where the stove is located inside the hot tub. The downside is that the stove takes up a large portion of the usable space in the hot tub, and much of the heat energy is lost directly upwards through the chimney.
An external stove is an advancement, where the stove is moved outside the hot tub’s body. This allows for more space inside the hot tub, and the heating efficiency is higher because the heating chamber is surrounded by water on all sides, including the top. The downsides are the stove’s exposure to Estonian weather conditions.
The integrated stove represents the latest generation of hot tubs, where the external stove is integrated into the hot tub’s body. This solution ensures high heating efficiency (less wood and time are required for heating), ample space inside the hot tub (the stove is located under a raised seat), and the stove is sheltered from weather conditions within the structure. The result is the best user convenience, efficiency, durability, and appearance.
What makes an integrated stove superior to an external stove?
When the hot tub is expertly crafted, the integrated stove presents clear advantages over an external stove. Here’s why choosing an integrated stove is a smarter, more efficient choice:
Enhanced Efficiency: The integrated stove is strategically positioned within an insulating air pocket created by the hot tub’s full base. This design significantly increases thermal efficiency. Unlike external stoves, which lose heat to the external environment, the integrated stove operates within a warm setting that greatly reduces heat loss, ensuring more efficient heating of the water.
Simplified Water Draining: Our integrated hot tubs feature a unified draining system, where both the tub and stove empty through a single tap, eliminating the need for a drain trap. External stoves require draining from two separate points — a drain tap for the tub and a cap on the stove — which complicates the process. This dual-point system increases the risk of forgetting to drain the stove, potentially leading to bacterial growth and contamination. Additionally, water left in an external stove during winter can freeze and cause damage. With an integrated stove, the risk of water stagnation is eliminated, as draining the hot tub simultaneously drains the stove. This not only enhances safety but also prevents the inconvenience of unintended water spillage or ice formation around the stove area in colder months.
Compact and Aesthetic Design: Beyond functional benefits, the integrated stove is more compact, taking up less room and offering a visually more appealing aesthetic. This sleek design is what you’ll notice first, though it represents more than just a beauty advantage. The integrated stove’s design contributes to the overall functionality and safety of the hot tub, making it not just a matter of aesthetics but an integral part of the superior user experience.
Choosing an integrated stove means opting for a hot tub that is not only efficient and convenient but also safe and beautifully designed, enhancing both the functionality and the visual appeal of your relaxation space.
Is it safe to sit above the integrated stove?
Sitting over an integrated stove is not any more dangerous than sitting in a standard tub. Imagine that you are actually sitting on top of a water barrel with a fire burning inside it. The maximum temperature of the stove’s outer wall is the same as the temperature of the water flowing in the tub, and the stove can be touched from the outside with a bare hand.
If it’s safe for your hand, it’s safe for the tub, with you inside it as well.
Is it better to choose a hot tub with a fibreglass interior or a fully wooden hot tub?
Our clear recommendation is to prefer a plastic liner. Although the hot tubs we offer have a 4.5cm thick thermowood body that would last a long time, we have decided to add a fibreglass liner for the following reasons:
- Reliability. Wood lasts a long time with proper care, but it’s impossible to avoid wood movement (expansion and contraction). Therefore, when filling a hot tub that has been unused for a while with water, you may discover that it leaks. It then takes several hours for the water to run so that the wood starts to swell, and you may need to adjust the binding rods. After swelling, there might be too little space between the rods, requiring further adjustments. Sometimes, this process can take several days.
- Maintenance. Anyone who has cleaned a wooden hot tub knows what it entails. The sauna’s interior inevitably comes into contact with moisture and can attract various insects, dirt, dust, and other garden debris. If all this remains on the wood surface for several months, a multi-hour cleaning session is guaranteed. A plastic liner is non-porous, so dirt doesn’t stick to it. Cleaning usually involves just rinsing with a garden hose and occasionally wiping it down quickly with a sponge and organic dish soap.
- Ergonomics. The plastic liner is especially comfortable since the backrest is shaped to follow the back’s contour.
- Practicality. Since the area under the seat is closed off, the water beneath the seat isn’t unnecessarily heated. This means less water is needed to fill the hot tub and less wood and time are required for heating.
Does installing a hot tub require any preparatory work?
No, it does not. The hot tub is ready for immediate use. Just place it in your desired location, fill it with water, and light a fire in the stove! We have also added supportive impregnated timber beams underneath the hot tub to ensure that its body is not in direct contact with the ground.
Optionally, you can mark the location for the hot tub by drawing a circle 20cm larger than its outer diameter. Within this circle, you can remove the existing ground cover (like grass), lay down geo textile fabric, and then add a small layer of crushed stone.
How to keep water clean in a hot tub?
Maintaining clean water in your hot tub is crucial for ensuring a healthy and enjoyable experience. Here are a few tips for maintaining clean water in your hot tub:
- Understanding Bacterial Growth:
Bacteria thrive in warm environments, particularly in water temperatures around 40 degrees Celsius. This is often the preferred temperature for hot tubs, making them susceptible to bacterial growth if not properly maintained. It’s also possible to use the tub without maintenance; however, it’s important to note that the water will remain clean for no more than 3 days in a row. - Filtration System:
Investing in a good filtration system is a key step. These systems circulate the water and filter out impurities, including small particles, debris, and some bacteria. Regular cleaning of the cotton balls used inside our filter systems is essential to ensure their effectiveness. - Chemical Treatment – Chlorine:
Chlorine has been a traditional method for sanitising pool and hot tub water. It’s effective at killing bacteria and preventing algae growth. However, it’s important to monitor the chlorine levels regularly using testing kits to ensure the water is safe for use. Overuse of chlorine can lead to skin irritation and affect the longevity of your hot tub components. - Chlorine Dioxide:
An emerging alternative to traditional chlorine is chlorine dioxide. This chemical is known for its efficiency in disinfecting and controlling bacteria, viruses, and algae growth in water, without producing harmful by-products. It’s gentler on the skin and eyes compared to traditional chlorine. Furthermore, it doesn’t impart a strong chlorine odor, making the hot tub experience more pleasant. - Regular Water Replacement:
Despite having a good filtration system and using chemicals, it’s advisable to regularly replace the water in your hot tub. Depending on usage frequency and the number of users, replacing the water every 2-4 weeks is recommended. This helps in controlling the build-up of chemicals and maintaining a healthy water balance. - Hot Tub Hygiene:
It’s beneficial to encourage users to shower before entering the hot tub, as this significantly reduces the introduction of contaminants – studies suggest that pre-shower can reduce the amount of bacteria brought into the tub by as much as 60%. Additionally, keeping the hot tub covered when not in use prevents debris from entering and helps maintain water temperature. - Monitoring and Testing:
Regular testing of the water’s pH level, alkalinity, and sanitizer levels is essential. Maintain the pH level between 7.2 and 7.8 for optimal sanitary conditions and user comfort.
By following these guidelines, you can ensure that your hot tub water remains clean, safe, and enjoyable for all users. Remember, a well-maintained hot tub not only provides a more pleasant experience but also extends the life of your investment.
What should be considered when heating the hot tub?
- Heating should only begin when the seat at the higher level, along with both openings from the stoves, are fully submerged in water!!!
- It is recommended to set a timer, for example, 20 minutes after adding wood, to prevent the fire from extinguishing in the meantime.
- The ideal water temperature is 38-40 degrees, according to personal preference.
- Heating can take up to 3 hours, depending on the size of the barrel and the outside temperature.
- The water should only be drained from the barrel when the fire in the stove has completely extinguished, preferably on the next day.
What are the health benefits of using a hot tub?
Relaxation and Stress Relief: Soaking in a hot tub provides a relaxing and peaceful experience, helping to reduce stress levels and promote overall mental well-being.
Muscle and Joint Pain Relief: The warm water and buoyancy in a hot tub can help alleviate muscle tension, reduce soreness, and ease joint pain, providing relief for conditions such as arthritis, fibromyalgia, and muscle strains.
Improved Sleep Quality: Regular use of a hot tub can improve sleep patterns and help individuals achieve a more restful night’s sleep by promoting relaxation and reducing anxiety.
Enhanced Circulation: The heat and water pressure from the jets in a hot tub can help improve blood circulation throughout the body, aiding in the delivery of oxygen and nutrients to tissues and promoting overall cardiovascular health.
Lower Blood Pressure: Soaking in a hot tub can help to lower blood pressure by promoting relaxation and reducing stress, ultimately benefiting cardiovascular health.
Stress Reduction and Mental Well-being: The warm water and soothing environment of a hot tub can help reduce anxiety, promote relaxation, and improve overall mental well-being.
Muscle Recovery: Hot tubs can aid in muscle recovery after physical activities or workouts by relaxing and soothing muscles, reducing inflammation, and promoting faster healing.
Improved Skin Health: The warm water in a hot tub can help cleanse the skin by opening up pores, encouraging the removal of toxins, and promoting a healthier complexion.
Prolonged Heat Sensation: After enjoying the hot tub, the resulting heat stays in the body for a long time, providing a deep sense of relaxation and pleasure. This lingering warmth can help ease any muscle tension and promote a feeling of well-being even after leaving the hot tub.
Digestive Stimulation: The warm water of a hot tub can help stimulate digestion. The heat works to increase blood flow to the digestive organs, promoting better digestion and potentially relieving discomfort such as bloating and indigestion.
Enjoyment of Fresh Air in Cold Climate: Hot tubs offer a wonderful way to enjoy the fresh air, even in the Nordic cold climate. By immersing yourself in the warm water while surrounded by the crisp air, you can experience a unique and invigorating connection with nature. This combination of hot and cold elements can provide a refreshing and exhilarating experience.
Cooling and Refreshing: In hot climates, using chilled water in a hot tub can provide a cooling and refreshing experience. The contrast between the warm air and the chilled water can help lower body temperature, provide relief from the heat, and promote a sense of revitalization and rejuvenation.
Using chilling water in hot tubs is commonly known as “cold plunge” therapy, and it can have various benefits such as reducing inflammation, promoting muscle recovery, and boosting circulation.
Remember, while hot tub usage can offer health benefits, it’s important to prioritize safety and personal health. Consult with a healthcare professional if you have any pre-existing medical conditions or concerns before using a hot tub.
Testimonials
Hot Tub Price
Exterior Color Options:
+€100
Interior Color Options:
- Comfortable 4-person capacity
- Compatible with 7kW heat pump for heating and cooling
- Efficient 800L water volume for faster heat-up
- External size of 170 × 145 cm
- 16 hydromassage jets with aeromassage
- 18mm thermowood exterior
- Monthly installment payment starting from ?? EUR
Your Journey with Us: What Happens Next?
- Inquire: Submit your inquiry below.
- Consult: We discuss your needs.
- Offer: Custom proposal in your inbox.
- Confirm: Just say yes.
- Invoice: Billing comes to you.
- Production: Crafting begins.
- Delivery: Directly to you.
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- Interest starting from 7,9%
- Contract length 3-48 months
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- No monthly management fees.
- Zero deposit