SaunaLife · Recovery Is a Discipline
SaunaLife Model S6B
Soak Series Home Wood-Burning Hot Tub, Black, Up to 7 Persons
SaunaLife Model S6B
Overview
Experience the pinnacle of backyard luxury with the SaunaLife Model S6B Tub, designed for those who value relaxation and Nordic-inspired craftsmanship. Built with high-grade, weather-resistant Thermo-Spruce wood, this soothing soaking tub offers an authentic off-grid experience for up to 7 people, eliminating the need for complex electrical wiring or high utility costs.
Key Features
- Black Thermo-Spruce materials (lasts up to 2X longer than Cedar)
- Luxury outdoor wood-burning hot tub
- Designed for outdoor ergonomic hot tub bathing experiences
- Arrives fully assembled and no electricity required (eco-friendly)
- Spacious interior holds over 436 gallons of pure water bathing pleasure
- Thick black contoured fiberglass lining provides enhanced bather comfort
- Durable black Thermo-Spruce tub surround (1.65” thick)
- Matching black Thermo-Spruce wood steps for easy access
- Stainless steel wood-burning heater utilizes dual heat compartments for unmatched efficiency
- Rapid response heat-up time prepares water to ideal temperatures in under 2-hours
- Wood-burning heater constructed of 304 stainless steel
- Polished stainless steel chimney with protection
- Superior thermal resistance (R-value) to retain heat
- Extra thick steel reinforced foam cover, folds for ease of removal and storage
- Dark grey marine grade vinyl cover exterior
- Integrated hot tub drainage tap
- Up to 7 bathers
- Exterior dimensions: 89"Diameter (226.1 cm) x 40.2"H (102.1 cm)
- Interior dimensions: 80.7"Diameter (205 cm) x 35.4"H (89.9 cm)
- Designed by SaunaLife and handcrafted in Northern Europe
WOOD-BURNING HOT TUB
The big soak — up to seven
The S6B wood-burning hot tub fits up to seven, heated by an integrated wood stove in durable black Thermowood — true off-grid backyard bathing.
View specifications
Crafted to Endure
Built for a Lifetime
Premium timber and precision construction that ages beautifully.
View AccessoriesThe Experience
Built for Recovery
Cold and contrast therapy, refined for the home. A hand-finished immersion tub engineered for the daily practice of recovery — restore the body, sharpen the mind.
Every Detail
Specifications & Details
Full Specifications
Model: MODEL S6B
Material: Black Thermo-Spruce
Exterior Dimensons: 89"Diameter (226.1 cm) x 40.2"H (102.1 cm)
Interior Dimensions: 80.7"Diameter (205 cm) x 35.4"H (89.9 cm)
Water Capacity: 436 Gallons
Product Weight: 551 lbs (249.9 kg)
Product Weight When Filled: 4187 lbs (1899.2 kg)
Stove Dimensions: 19.8"W (50.3 cm) x 11.8"D (30 cm) x 13.1"H (33.3 cm)
Chimney Dimensions: 106.3"H (270 cm)
Maximum Wood Length: 16" (40.6 cm)
Maximum Temperature: 106°F (41.1°C)
Shipping Dimensions: 93"W (236.2 cm) x 47.2"D (119.9 cm) x 94.5"H (240 cm)
Shipping Weight: 728 lbs (330.2 kg)
Specifications subject to change. Please contact us to verify current specifications before purchase.
Dimensions & Weight
Exterior Dimensons: 89"Diameter (226.1 cm) x 40.2"H (102.1 cm)
Interior Dimensions: 80.7"Diameter (205 cm) x 35.4"H (89.9 cm)
Water Capacity: 436 Gallons
Product Weight: 551 lbs (249.9 kg)
Product Weight When Filled: 4187 lbs (1899.2 kg)
Stove Dimensions: 19.8"W (50.3 cm) x 11.8"D (30 cm) x 13.1"H (33.3 cm)
Chimney Dimensions: 106.3"H (270 cm)
Shipping Dimensions: 93"W (236.2 cm) x 47.2"D (119.9 cm) x 94.5"H (240 cm)
Shipping Weight: 728 lbs (330.2 kg)
Materials & Construction
Model: MODEL S6B
Material: Black Thermo-Spruce
Maximum Wood Length: 16" (40.6 cm)
Maximum Temperature: 106°F (41.1°C)
Electrical Requirements
This product requires professional installation by a licensed electrician. Electrical requirements depend on the heater or generator system selected — please refer to the installation manual.
What's Included
- Fully Assembled Hot Tub
- Steps
- Insulated Cover
- Drainage with Tap
- Polished Stainless Steel Chimney
- Chimney Cap
- Installation Instructions
FAQ
What temperature range does the immersion tub reach?
The tub is compatible with SaunaLife's FDC chiller/heater systems. The chiller can cool water down to approximately 37–42°F (3–6°C) and the heater option can warm water up to 104°F (40°C) — perfect for contrast therapy.
How long does it take to reach the target temperature?
With the combined chiller/heater unit, the tub typically reaches cold temperature (below 50°F) within 4–6 hours from ambient temperature. Warm soak temperature is reached in approximately 1–2 hours.
Is a chiller or heater included?
The tub itself is sold separately from the chiller/heater. See our package bundles to add a compatible FDC unit.
How many people can use it at once?
Soak Series Home Wood-Burning Hot Tub, Black, Up to 7 Persons
What is the warranty?
All SaunaLife immersion tubs include a 5-Year Residential Limited Warranty covering manufacturer defects in materials and workmanship. Contact us at info@saunaco.us to file a claim.
Why It's Different
Signature Features
Cold + Hot Therapy
Achieve the full contrast therapy protocol with cold plunge and warm soak in a single unit — boosting circulation, recovery, and mental clarity.
Premium Wood Body
Crafted from kiln-dried Spruce or Alder with hand-finished joinery — built to withstand continuous water exposure and temperature cycling.
Compatible Chillers
Pairs seamlessly with SaunaLife's FDC water chiller and heater units for precise temperature control from 37°F to 104°F.
5-Year Warranty
Covered by SaunaLife's industry-leading 5-year residential limited warranty — your investment is fully protected.
Explore the Details
Tap the markers to see what sets it apart.
Ergonomic Soaking Basin
A contoured interior seats up to 7 around 436 gallons of restorative water.
Wood-Fired Heat
An off-grid wood-burning heater brings the water to temperature without electricity.
Staved Shell & Steps
A weather-tough black Thermo-Spruce stave shell with matching entry steps.
Verified Reviews
Loved by Owners
Michael R.
Verified Buyer
I've had this plunge tub for six months now and it has completely transformed my recovery routine. The build quality is exceptional — solid, well-finished, and exactly as described. Cold plunging at home is now something I look forward to every morning.
Sarah K.
Verified Buyer
Delivery was smooth and the tub arrived in perfect condition. Setup was straightforward. Water stays cold and the craftsmanship is on another level compared to cheaper alternatives I'd been looking at. Worth every penny.
James T.
Verified Buyer
The combination chiller/heater package is a game-changer. Hot soak in winter, cold plunge in summer — all in one unit. SaunaCo's support team was incredibly helpful during setup. Cannot recommend this enough.