Premium Wood-Burning Hot Tub for Outdoor Soaking

The SaunaLife Model S6B is a fully assembled, outdoor wood-burning hot tub designed for up to 7 bathers. It holds 436 gallons of water and heats from 40°F to 95°F in approximately 1.5–2 hours using a dual-chamber 304 stainless steel stove that reduces wood consumption by up to 50%. Crafted in Northern Europe and finished in durable black Thermo-Spruce, the Model S6B requires no electricity, making it ideal for off-grid properties, cabins, and backyard wellness spaces.

Why Homeowners Choose the Model S6B

🔥 Rapid Wood-Fired Heating (No Power Required)

• Heats 436 gallons in 1.5–2 hours
• No electrical hookup needed
• Burns standard firewood (up to 16")
• Maximum temperature: 106°F

At the heart of the system is a corrugated 304 stainless steel stove engineered with:

• Dual heat compartments
• Secondary chamber that captures heat from smoke
• Up to 50% lower wood consumption than standard wood-fired tubs
• Integrated water channel system for even temperature distribution

Cooler water is drawn in through a lower channel and redistributed through an upper channel to maintain consistent soaking temperatures.

S6B 7-Person Manuals

• Installations Manual
• Specs Sheet
• Warranty

🌲 Thermo-Spruce Construction (Lasts Up to 2X Longer Than Cedar)

The Model S6B uses thermally modified spruce—known as Thermo-Spruce—for enhanced durability and thermal performance.

Benefits of Thermo-Spruce:

• Superior R-value for heat retention
• Exceptional dimensional stability in wet conditions
• Increased resistance to decay
• Longer lifespan than traditional cedar
• Eco-friendly and sustainably sourced

The 1.65" thick surround is painted black for modern aesthetics and enhanced weather protection.

🛁 Spacious, Ergonomic Soaking for Up to 7 People

Designed for comfortable group bathing, the Model S6B includes:

• Thick dark grey contoured fiberglass interior
• Smooth, easy-to-clean surface
• 436-gallon capacity
• Integrated drainage tap
• Reinforced structure for long-term outdoor use

Ideal for:

• Backyard entertaining
• Family wellness routines
• Lake houses & cabins
• Off-grid retreats

How the Dual-Chamber Stove System Works

The Model S6B stove is engineered for high efficiency:

1. Firewood burns in the primary chamber.
2. Heat and smoke pass into a secondary chamber.
3. Residual heat is captured and transferred into the water.
4. Corrugated steel increases surface area for maximum heat transfer.
5. The water circulation channel system equalizes temperature naturally.

This design reduces wasted heat while accelerating warm-up time.

What’s Included

• Fully assembled hot tub
• 304 stainless steel wood-burning heater
• Polished stainless steel chimney (106.3" height)
• Chimney cap
• Matching Thermo-Spruce steps
• Extra-thick steel-reinforced insulated cover
• Dark grey marine-grade vinyl cover exterior
• Integrated drainage system with tap

No additional electrical components required.

Technical Specifications

• Model: S6B
  
• Material: Thermo-Spruce
  
• Water Capacity: 436 gallons (1650.4 L)
  
• Interior Dimensions: 80.7" Diameter × 35.4" H
  
• Exterior Dimensions: 89" Diameter × 40.2" H
  
• Filled Weight: 3,064 lbs
  
• Stove Dimensions: 19.8"W × 11.8"D × 13.1"H
  
• Chimney Height: 106.3"
  
• Maximum Wood Length: 16"
  
• Maximum Temperature: 106°F
  
• Shipping Weight: 728 lbs
  
• Shipping Dimensions: 93"W × 47.2"D × 94.5"H

Designed & Engineered for Outdoor Wellness

Handcrafted in Northern Europe by SaunaLife, the Model S6B reflects Scandinavian soaking tradition—efficient, durable, and built for year-round outdoor use.

Its electricity-free design makes it suitable for:

• Rural properties
• Cabins and lake homes
• Remote retreats
• Sustainable backyard wellness spaces