SaunaLife Model S4B Wood-Fired Hot Tub

Soak-Series Home Wood-Burning Hot Tub, Black, Up to 6 Persons

Model S4B Outdoor Wood-Burning Hot Tub   

The SaunaLife SOAK-Series Model S4 represents the very best in wood-burning hot tub quality, efficiency, and luxury.  

Ready for your hot tub party  

The Model S4B wood-fired hot tub arrives completely assembled and is easy to set up. Its ergonomically shaped fiberglass tub is a comfortable place for up to 6 people. The interior surface is easy to clean, and the exterior is crafted from thermally enhanced spruce for superior weather resistance and durability. 

Engineered for efficiency and performance 

Engineered and crafted in the Northers Europe, this super-efficient hot tub heats in 1/3 of the time as traditional wood-fired hot tubs. No electrical connection is required. At the heart of the Model S4 is its ingenious self-cleaning corrugated stove with a secondary chamber that transfers heat from the smoke – reducing wood consumption up to 50% compared with other hot tubs. Brilliantly, the air between the fiberglass lining and the wood exterior is super-heated to accelerate the heating process. The stove is cleverly engineered to draw cooler water through a lower channel and redistribute it though an upper channel to equalize the temperature.  

Start enjoying sooner 

This incredibly efficient wood stove will heat 304 gallons of water from 40°F (5°C) to 95°F (35°C) in 1.5 to 2 hours – the fastest-heating wood-burning hot tub available.  

Relax with friends and family the luxury of your Model S4 backyard wood-burning hot tub from SaunaLife.

Model S4B 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 304 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), painted black
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 6 bathers
Exterior dimensions – 79" diameter and 37” high
Interior dimensions – 71" diameter and 33” deep
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)