SaunaLife Model S6N 7-Person Wood-Burning Natural Hot Tub

A naturally beautiful, off-grid soaking tub designed for effortless warmth, efficiency, and shared relaxation.

The SaunaLife SOAK-Series Model S6N is a premium, fully assembled wood-burning hot tub designed for those who value performance, craftsmanship, and true off-grid simplicity.

Built with a durable Thermo-Spruce exterior and a contoured fiberglass interior, it comfortably seats up to seven and heats over 435 gallons of water in as little as 1.5–2 hours, without requiring electricity. Engineered in Northern Europe for efficiency and longevity, the S6N delivers a refined, authentic wood-fired soaking experience with faster heat-up times and reduced wood consumption.

Model S6N Outdoor Wood-Burning Hot Tub   

Model S6N Outdoor Wood-Burning Hot Tub   

• 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 dark grey contoured fiberglass lining provides enhanced bather comfort
• 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
• Durable Thermo-Spruce tub surround (1.65” thick)
• Superior thermal resistance (R-value) to retain heat
• Matching Thermo-Spruce wood steps for easy access
• 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

Thermo-Spruce Material Advantages

• Lasts up to 2X longer than Cedar
• Superior thermal resistance (R-value)
• Eco-friendly
• Ideal for water use (stable)

Includes:

Model S6N Outdoor Wood-Burning Hot Tub  

• Fully Assembled Hot Tub 
• Steps
• Insulated Cover
• Drainage with Tap
• Polished Stainless Steel Chimney
• Chimney Cap

Wood-Fired Soaking, Reimagined

The SaunaLife SOAK-Series Model S6N sets a high standard for wood-burning hot tubs — blending traditional outdoor bathing with modern engineering for faster heating, improved efficiency, and long-term durability.

Crafted to Last

The exterior is constructed from thermally enhanced Thermo-Spruce, offering superior resistance to weather and moisture and lasting up to twice as long as traditional cedar. Inside, a premium contoured fiberglass liner provides ergonomic comfort for up to seven bathers while ensuring easy maintenance and long-term structural integrity.

Arriving fully assembled, the Model S6N requires no electrical connection — making it ideal for backyards, cabins, retreats, or off-grid properties.

Engineered for Efficiency

At the heart of the S6N is a high-performance dual stainless-steel wood-burning heater system crafted from professional-grade 304 stainless steel. Its innovative corrugated stove design includes a secondary heat-transfer chamber that captures heat from smoke before it exits the chimney — helping reduce wood consumption by up to 50% compared to conventional wood-fired tubs.

Air between the fiberglass shell and wood exterior is intentionally super-heated to accelerate overall warming, while a smart internal circulation system draws cooler water through a lower channel and redistributes it through an upper channel to promote even temperature throughout the tub.

The result?

436 gallons of water heated from 40°F to 95°F in approximately 1.5–2 hours — significantly faster than traditional wood-burning models.

Designed for Outdoor Luxury

• Spacious 435+ gallon capacity

• Ergonomic seating for up to 7 adults

• Dual stainless-steel heater compartments for enhanced performance

• Polished stainless-steel chimney with protective cap

• Rapid heat-up time

• No electricity required

Whether you're gathering with friends or creating a quiet ritual under the open sky, the Model S6N offers a balance of efficiency, craftsmanship, and natural heat that makes wood-fired soaking both practical and deeply enjoyable.