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Clive H.
Excellent product and excellent service. A top-notch company that delivers on its promises. From our initial discussions through to the final implementation, the entire process was impressive.
4.7 kW heater
1500 × 1500 × 2150 mm
Sauna for 2 people
3-year warranty
Thermo Black 150 Indoor Sauna
An indoor sauna that balances size and design, featuring a premium dark finish for contemporary interiors.
Heats up to 80–100°C in 20–30 minutes
Comfortable size for two people
Dark Thermowood with a premium look
Balancing everyday comfort and visual identity
Designed and manufactured in the EU
Starting at €9,350.00
Base price · VAT included · Heater and extras can be configured below
- Entire structure made of Thermowood
- Tempered glass door
- Two-tier benches
- Hardware kit and assembly manual
- Heater, stones, and electrical components
- Lighting and accessories
- Delivery and assembly
Exterior
1500 × 1500 × 2150 mm
Interior
1324 × 1370 × 2022 mm
Weight
~380 kg
Capacity
2 people
Interior area
1.81 m²
Heater
4.7 kW
Interior wood
Heat-treated poplar
Benches
Heat-treated poplar
Glass
Tempered, 8 mm
Walls
80 mm
Insulation
Mineral wool, 50 mm
If in stock
Delivery in 1–2 weeks
Made-to-order
Typical lead time of 6–8 weeks
Professional installation is available and coordinated by Saunamo.
Service
installation
installation
Shipping
international
international
Support beforehand
and then
and then
Thermo Black Sauna for Two, with a design that makes no compromises
Format
Comfortable for two people
Comfortable for two people
More interior width for shared use, while maintaining a balanced design for home use.
Materials
Heat-treated poplar in the interior and on the seats
Heat-treated poplar in the interior and on the seats
Heat-treated wood with 8 mm tempered glass, an 80 mm wall, and 50 mm mineral wool.
Heat
Traditional sauna for regular use
Traditional sauna for regular use
Designed for electric heating suited to the size of the cabin and frequent use at home.
Environment
More space with Thermo Black
More space with Thermo Black
A balance between interior space, dark finishes, and a contemporary aesthetic.
"It's become a daily ritual… I ordered one from the real Finnish experts at Saunamo—some of the best saunas I've ever seen… It's an investment in health, longevity, and quality of life."
Long-lasting heat-treated wood
Naturally refined. Built for performance.
Heat-treated wood is the basis of every Saunamo sauna—chosen not only for its beauty, but also for its exceptional performance in high-temperature and high-humidity environments. The heat treatment process increases the durability, stability, and natural resistance of the wood.
Dimensions and technical specifications
Everything you need to know to make sure the Thermo Black 150 Indoor Sauna fits in your space.
Exterior1500 × 1500 × 2150 mm
Interior1324 × 1370 × 2022 mm
Heater4.7 kW
Key figures
| External dimensions | 1500 × 1500 × 2150 mm |
| Interior dimensions | 1324 × 1370 × 2022 mm |
| Capacity | 2 people |
| Interior volume | 3.67 cubic meters |
| Living area | 1.81 m² |
| Recommended heater | 4.7 kW |
Cabin materials
Dark Thermo Aspen with a more architectural look
In the Thermo Black line, the dark thermowood and black seats create a more visually striking look, while maintaining comfort and stability for frequent indoor use.
Free service
Fit verification before ordering
Send us the measurements or photos of the space, and we’ll help you confirm the layout, access points, and floor plan.
Sauna + ice. The full experience.
Combine this sauna with an ice bath to create a complete thermal contrast ritual.
Cube Ice Bath↗
Clean lines and architectural design create a harmonious contrast with visual coherence.
Ofuro Ice Tub↗
Inspired by the Japanese bath, Ofuro offers a deeper immersion and a more serene atmosphere for projects that contrast with a more natural aesthetic.
Would you like to set up a complete contrast therapy system?
We can help you coordinate the sauna, ice bath, layout, and order of use.
No surprises.
From start to finish.
We guide you through every step—from initial planning to post-installation support.
01PlanningValidate the essentials
02DeliveryDeadline and logistics
03InstallationInstallation and connection
04Support3 years + support
Before placing your order
Before placing your order
01
Initial planning
We’ll review the layout, dimensions, and electrical requirements with you before you place your order. The Thermo Black requires a dedicated circuit and must be installed by a certified electrician—we’ll provide the complete wiring diagram.
Available spaceDedicated electrical connectionAccess to the site
02
Home delivery
The sauna arrives in flat-pack modules that fit together, delivered directly to the address you provide. We will confirm the delivery date and access route with you in advance.
03
Assembly
You can install the Thermo Black 150 yourself—we provide detailed manuals with step-by-step instructions. If you prefer, you can purchase Saunamo’s professional installation service, where our team takes care of everything. For the electrical connection, you can hire your own electrician or purchase Saunamo’s electrical installation service.
After installation
04
Ongoing support
After installation, we’re still here for you—with a 3-year manufacturer’s warranty, replacement parts, and technical support whenever you need it.
3-year warranty
"Saunamo's service was excellent; the sauna was a fantastic purchase, offering improved cardiovascular health, a boosted metabolism, better sleep, muscle recovery, toxin elimination, and stress reduction."
Why Saunamo?
We don’t sell generic saunas. We design complete experiences, featuring premium quality, thoughtful design, and ongoing support—from your first contact to your first session.
Without supervision
With Saunamo
Without follow-upChoice made solely based on specifications
With SaunamoPersonalized guidance from our sauna experts to help you find the right sauna for your space and routine
Without supervisionThe quality and treatment of materials may vary
With SaunamoPure, toxin-free, carefully selected Nordic wood
No deliveryDelivery only
With SaunamoFree technical consultation before ordering + support throughout the entire process, until the sauna is installed and ready to use
Without supervisionNo proven technical basis for building saunas
With SaunamoProven technical expertise in sauna construction for safe and optimized performance
No follow-upSupport ends upon purchase
With Saunamo3-year warranty and after-sales support
What our customers say
4.9
Google
Verified customers who have installed Saunamo saunas
Matt F.
The sauna was amazing. The staff handled everything with great professionalism and were always very customer-focused. We felt confident from start to finish.
Anna S.
We were impressed by the quality, design, and functionality. Communication was always prompt and reliable, and all our questions were answered clearly.
Derek H.
The build quality is exemplary. The customer service is among the best we’ve ever encountered. It was a very worthwhile investment for our home and our well-being.
VB
Vitali B.
It's absolutely worth every euro. The sauna arrived in perfect condition, and the team was extremely helpful throughout the entire process.
JC
Jorge C.
I highly recommend it. A top-notch product and a fantastic team. From our first contact through to the final stage, everything went perfectly.
SW
Sarah W.
From order to delivery, the entire experience was seamless. The sauna is beautifully crafted, and the after-sales support has been excellent.
Police
Pedro M.
One of the best purchases we've made for our home. Authentic quality and top-notch customer service.
Dedicated support
Do you have a specific question about this sauna?
We help you assess the space, requirements, and model before moving forward with a proposal and order.
Frequently Asked Questions About This Sauna
01What is included in the base price?+
- Entire structure made of Thermowood
- Tempered glass door
- Two-tier benches
- Hardware kit and assembly manual
Heater, stones, and electrical components · Lighting and accessories · Delivery and installation are not included in the base price.
02How long does it take to heat up?+
With the recommended electrical settings for this model, the typical heating time is around 20 to 30 minutes. The 3.67 m³ interior volume provides even heating for regular use.
03Is it safe to use a sauna indoors?+
Yes. It is designed for indoor use, with thermo-aspen surfaces, 80-mm walls, 50 mm of mineral wool insulation, and an 8-mm tempered glass front. The final electrical connection must be inspected by a certified electrician.
04How long does it take to deliver the Thermo Black 150 sauna?+
1–2 weeks, if the model is in stock. If it is made to order, the usual lead time is6–8 weeks. We always confirm the exact lead time before finalizing the order.
05What kind of space is ideal?+
Measuring 1500 x 1500 x 2150 mm, it fits well in bathrooms, wellness rooms, basements, and other dry indoor spaces that can accommodate the cabin and allow for installation access. It provides a more spacious indoor sauna without moving up to the 220 series models.
06What are the electrical requirements for the Thermo Black 150 sauna?+
This model can be configured with the 7.4 kW Aava or 6.6 kW Kajo electric heaters. The electrical installation must be prepared for the selected heater and verified by a certified electrician. Saunamo provides the technical documentation for the model to the electrician in charge and helps confirm that the available space and power supply are adequate.
07How does delivery work?+
It is delivered in flat-pack form for indoor assembly. Before delivery, we confirm the entire route to the final room, including stairs, turns, and narrow passages.
08Can I install the sauna myself?+
Yes. It is modular and includes all the necessary assembly instructions. If you prefer, you can also use Saunamo’s certified installation service, especially for finished interior spaces.
09What warranty is included with the Thermo Black 150 sauna?+
It includes a 3-year warranty on the structure and components covered by the respective terms and conditions. If any covered issue arises, the Saunamo team will help assess the situation and advise you on the next steps.
10How do I choose the right heater?+
The recommended electric heaters for this model are the 7.4 kW Aava and the 6.6 kW Kajo. The interior volume of 3.67 m³ is designed to work well with this range, providing even heating and a stable temperature throughout the session. If space or power supply requirements suggest that further assessment is needed, we will confirm the final choice with you before placing the order.
Compare indoor saunas
8 models
Swipe to compare.
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Aisti 120
Ideal for smaller rooms when you want a traditional sauna experience in a truly compact design.
Aisti 150
Ideal for medium-sized indoor spaces when you want more comfort without upgrading to a larger cabin.
Aura 110
Ideal for daily infrared recovery when you want the fastest routine in the smallest possible space.
Aura 150
Ideal for infrared sessions when you want more interior space and greater comfort in everyday use.
Thermo Black 110
Perfect for smaller spaces when you want the Thermo Black look without taking up too much room.
Thermo Black 150
Ideal for regular indoor use when you want the Thermo Black finish in a more comfortable size for two people.
Thermo Black 220
Ideal for stylish interiors where the sauna should blend seamlessly into the home’s architecture.
Thermo Black 220 Plus
Ideal for larger spaces where the sauna should feel more spacious, social, and comfortable.
Aisti 120
1200 × 1500 × 2330 mm
Aisti 150
1500 × 1500 × 2330 mm
Aura 110
43.3 × 39.4 × 83.3 inches
Aura 150
1500 × 1000 × 2100 mm
Thermo Black 110
1026 × 1200 × 2150 mm
Thermo Black 150
1500 × 1500 × 2150 mm
Thermo Black 220
2205 × 1500 × 2150 mm
Thermo Black 220 Plus
86.6 × 86.6 × 84.3 inches
Aisti 120
4.7 kW electric heater
Aisti 150
4.7 kW electric heater
Aura 110
3 full-spectrum panels + 150 W power supply
Aura 150
4 full-spectrum panels + 2 heating pads
Thermo Black 110
4.7 kW electric heater
Thermo Black 150
7.4 kW electric heater
Thermo Black 220
6.6 kW electric heater
Thermo Black 220 Plus
9.4 kW electric heater
Aisti 120
15–25 min
Aisti 150
20–30 min
Aura 110
10–15 min
Aura 150
10–15 min
Thermo Black 110
15–25 min
Thermo Black 150
20–30 min
Thermo Black 220
20–30 min
Thermo Black 220 Plus
25–35 min
Aisti 120
Light-colored alder and poplar trees, creating a serene Nordic atmosphere.
Aisti 150
Light-colored alder and poplar, creating a brighter, more spacious feel.
Aura 110
Natural poplar with black accents and a lighter glass finish.
Aura 150
Natural poplar with black accents, more glass, and a more open feel.
Thermo Black 110
Dark Thermowood with black benches in the most compact model of the line.
Thermo Black 150
Dark Thermowood with black benches in a more balanced design for everyday use.
Thermo Black 220
Dark Thermowood with black benches in a wider, more architectural design.
Thermo Black 220 Plus
Dark Thermowood with black benches in the widest, lounge-style configuration in the line.
Aisti 120
Ideal for smaller rooms when you want a traditional sauna experience in a truly compact design.
1200 × 1500 × 2330 mm
4.7 kW electric heater
15–25 min
Light-colored alder and poplar trees, creating a serene Nordic atmosphere.
Aisti 150
Ideal for medium-sized indoor spaces when you want more comfort without upgrading to a larger cabin.
1500 × 1500 × 2330 mm
4.7 kW electric heater
20–30 min
Light-colored alder and poplar, creating a brighter, more spacious feel.
Aura 110
Ideal for daily infrared recovery when you want the fastest routine in the smallest possible space.
43.3 × 39.4 × 83.3 inches
3 full-spectrum panels + 150 W power supply
10–15 min
Natural poplar with black accents and a lighter glass finish.
Aura 150
Ideal for infrared sessions when you want more interior space and greater comfort in everyday use.
1500 × 1000 × 2100 mm
4 full-spectrum panels + 2 heating pads
10–15 min
Natural poplar with black accents, more glass, and a more open feel.
Thermo Black 110
Perfect for smaller spaces when you want the Thermo Black look without taking up too much room.
1026 × 1200 × 2150 mm
4.7 kW electric heater
15–25 min
Dark Thermowood with black benches in the most compact model of the line.
Thermo Black 150
Ideal for regular indoor use when you want the Thermo Black finish in a more comfortable size for two people.
1500 × 1500 × 2150 mm
7.4 kW electric heater
20–30 min
Dark Thermowood with black benches in a more balanced design for everyday use.
Thermo Black 220
Ideal for stylish interiors where the sauna should blend seamlessly into the home’s architecture.
2205 × 1500 × 2150 mm
6.6 kW electric heater
20–30 min
Dark Thermowood with black benches in a wider, more architectural design.
Thermo Black 220 Plus
Ideal for larger spaces where the sauna should feel more spacious, social, and comfortable.
86.6 × 86.6 × 84.3 inches
9.4 kW electric heater
25–35 min
Dark Thermowood with black benches in the widest, lounge-style configuration in the line.
Need help choosing the right model?
Our sauna specialist will assess your space, preferences, and budget—and recommend the perfect model in just a few minutes.
